Id say the easiest way to get your ADF games over to you Amiga is by getting yourself a Catweasel Flipper. This is a PCI card that allows you to use an amiga floppy drive on your PC... so then you can unadf them on the PC side directly to an amiga floppy, then you can pop the floppy into your real amiga and off you go... you can get some more info from:
http://www.jschoenfeld.de/products/cwmk3_e.htm