Airport extreme card, no basestation

I have just bought a 2nd-hand G4 iMac (20" lamp, 1.25GHz, 750Mb memory, running 10.3.2) but it has no airport card. 3 questions for you geniuses out there.
1: I have stored all my iTunes video on DVD which the Mac will not play. It WILL play normal DVD,s and I therefore suspect that because they were burned on a external drive from my netbook, running Windows XP, they may not be compatible with the Mac. Is there any way I can play them directly on the Mac?
2: I'm pretty sure that I can fit an airport extreme card into the machine, Will this work with a conventional router or do I need the (v expensive) base station?
3: I have a dongle for the "3" network here in the UK. If I put credit on this will it work on the Mac?

Thank you very much
Gordon (back in the Mac fold at last)

divergordon said:

2: I'm pretty sure that I can fit an airport extreme card into the machine, Will this work with a conventional router or do I need the (v expensive) base station?

Click to expand...

Yes...an Airport Extreme card will work with just about any router. This is exactly the setup I have (and many others have)...Airport card + non-Apple router.

HTH,

- Nick

Thank you Nick.