WinUAE is an excellent emulator, unfortunatly you need the appropriate kickstart ROMS (not distributed with WinUAE) to get it to emulate the various different types of AMIGA. These are still copyrighted and must be paid for unless you still own an AMIGA.
If you have the origonal games, you are legally entitled to download the roms for them (if you can find them). Transferring the discs onto your PC is not so easy, as the AMIGA had it's own Floppy format which PC's can't read. If you can get hold of an old amiga, there are utilities to make pc readable discs.
Drop me a line (email) if you want to know more.