emulatorII-list

O.K. I'm new to all this so please pardon my ignorance and here goes. 
I purchased an Emulator 2 yesterday(single floppy drive) with the 
knowledge that the original 5 1/4 floppy drive was probably toast.
(Floppy drive led remains lit when I turn the unit on with no floppy 
present, will not load anything even when disc is present ets. etc. 
Issues most of you are probably familiar with.) So here go the 
questions.

1. Can I find a 5 1/4 floppy drive unit? I am assuming not.
2. If I replace the 5 1/4 drive with a 3.5 drive, can I or how do I 
tranfer all of my 5 1/4 floppy performance and library disc to the 3.5 
format?(Don't laugh too hard.) Are these 5 1/4 floppys essentially 
worthless to me outside of ebay or those of you who still have working  
E2s with 5 1/4 drives.
3. Lots of talk on here about programing,editing and tranfer via old 
Macs, etc. Keep in mind I have never used and operating system older 
than Windows 98 and OSX 10.4 so I need some serious schooling. Help!