Mac and XP

Hi all, need alittle help here.
I'm a Mac newbie, just bought a 12" Powerbook Sunday and I must admit, I'm having a blast with it..I love it.

I set it up alright, got on the internet *You could have guessed right *
though my wireless network setup in my house.

Today I tried and got my PB to talk and exchange files with my XP machine..then I hit a snag. Now when I try to exchange files from the Mac to XP and vice versa, my XP machine takes a dump, It totally stops any and all networking, Internet Email File Exchanging...everything. If I stop the Mac from talking with the XP box and let it set, XP will then start slowly going back on the net and downloading.

Anyone have a suggestions?

Thanks All

 

I've ran antiv on the windows machine this morning..good idea though, never thought about that.