I have the FE-2 with a Nikkor 28 mm f2.8 and a Nikkor 35-105 mm F3.5. a very good camera but I haven't used it in years and with all of the digital cameras out there it ain't worth very much.
will these old lens (not auto focus) work on the new digital cameras?
To a great extent, IT DEPENDS. While these lenses will mount on the low end Nikon DSLR's you won't have any functional light meter. Basically, you'll have to set the camera to manual exposure, select a shutter speed on the camera and the aperture on the lens, then take a picture and look to see how good your exposure guestimate was.
Now, if you want to pony up about 1800 bucks for a D300S the story changes. Because the Pro level Nikon digitals still have the coupling mechanism for the aperture ring on the older Nikkors. With these cameras you pre-program the maximum aperture for the lens(es) you plan to use and select that particular program when you mount the lens. Once you've done that, you have full metering capability in the A, and M modes. The only caveat is that any lens used must conform to the Nikon AI lens mount, the older lenses that used the old rabbit ear won't couple to the AI indexing ring and these old lenses can break that indexing ring if all you do is mount the lens. It's why I took the time to convert all my older Nikkors to the AI standard in the 80's. One of the finest 50mm lenses ever made was the 50mm f2 Nikkor H which predated the AI standard by about 20 years, however by installing a conversion AI aperture ring when they were available means I can use that lens on one of my Nikon F FTn's or on my D300. Yeah, I've been around Nikons for a lot of years.
WARNING, any older Nikon lens you want to use on a newer digital MUST be FULLY COMPLIANT to the Nikon AI specification. Back in the early 80's there were a lot of users who were carving their aperture rings to allow them to work with the AI metering system. Unfortunately, they didn't take the time to shape the aperture ring for the F2's DS-12 auto aperture servo drive tab and that particular feature was used to sense minimum aperture status on the D70 and digitals of a similar vintage. As a result, AI modified lenses would snap that pickup tab on the D70's, D1, and D2's when the user simply mounted the lens. I have no idea if the D3000 and later AFS digitals have features that can be damaged by the older Nikkor's but I would urge caution when considering trying an older lens on a newer camera.
Now, one tip for identifying if a Nikkor is fully AI compliant and it's a sure bet tip. Look on the aperture ring for 2 seperate parallel sets of ENGRAVED aperture numbers. Note, a paper label doesn't count, those numbers MUST be engraved. If you see 2 sets of numbers, the lens WILL be fully AI compliant. BTW, that second row was used on some Pro Models from the F3 up to the F5 to display the aperture in the viewfinder and Nikon enforced having this second row of numbers engraved even for the aftermarket lens makers. Also note, the older AF Nikkors that feature an aperture ring on the lens will also have this second row of aperture numbers because all those lenses were also fully AI compliant.
Now for a final note on AF Nikkors versus AFS Nikkors. The original Nikon autofocus camera used a motor in the body to drive the lens focusing via a slotted drive coupling in the lens mount. Because these lenses predated body control of the lens aperture by a good number of years the AF Nikkors can be quickly identified by their having an aperture ring on the rear of the lens. The more recent AFS Nikkors do NOT have an aperture ring on the lens and the camera body controls the lens aperture. In addition, they have a motor in the lens to drive the focus. Why this is important is that the AF Nikkors will not autofocus on the newer consumer Nikon's and the lens can ONLY be used in the A or P modes IIRC. As for the AFS Nikkors, they won't autofocus on a screw drive body and they can only be used at the minimum aperture (f22) on camera bodies that predate the F5 because there is no means to control the lens aperture.
Bascially, when mixing generations of cameras and lenses you really need to be aware of the changes over the years and MAKE SURE YOU READ THE MANUAL FOR YOUR CAMERA. Because if you take an "it'll fit" approach without knowing the risk, you face a very real risk that you may BREAK YOUR CAMERA.
PS; I started out in the Nikon line with a used 25 dollar Nikkormat FS that had been a Press camera and it looked like it had spent some time driving nails. However, that old non metered FS still works perfectly today. Later on it was an F FTn Photomic, a brace of F2SB's, then an N8008, F5, D70, and finally what may be the last Nikon I buy, the D300. Until Nikon started implementing the AFS system around 2003 or 4, I had the ability to use every single one of my lenses on any of those proceeding models, because I took the time over the years to do the AI conversions and also took the time to mount rabbit ears on my later lenses so they retained metering function on the older vintage Nikons. I'm still a bit peeved about Nikon dropping the aperture ring but to be honest about the only camera I use today is the D300, it's a great camera and with Kodachrome in the History books it also produces better image quality than any film still being made.