For
DOOM you can use a lil proggy called
DosBox (A DOS emulator) or
GZDoom (A Doom source port wich use your original doom .wad files).
Unreal should install and play just fine (just make sure to
update the game)
The last time i tried to play
Quake gave me an error, but if i find the disk i'll give it another try.
Any further questions just let me know.