No problem
As I'm sure you've worked out you don't actually need a phsyical floppy disk drive, just insert an .adf, .dms, or .ipf file into the DFO:, DF1:, DF2: or DF3: etc. and your away...
Like you probably read in the FAQs,
http://www.planetemu.net/ is a good source for games. It's a bit out-of-date in terms of it's TOSEC collection but here you will find many "old memories" for download. Have fun