Vista - DEP Got my pc crazy!!!!

Hi guys, i been a vista user for a long time now, ive always used the 32bit ultimate, on my laptop, now that i bought my new pc and installed Vista x64 on it, its been a nightmare! i have no idea of what the heck is going on, i have my wireless card and cant install the drivers BECAUSE THERE ARE NO DRIVERS ON THE DAMN MANUFACTURER WEBSITE, so i plugged my laptop to my desktop so i can get internet from there and now the DAMN DEP BLOCKED EVERYTHING!!! Firefox IE everything that can get to the internet its blocked now, i know its not the drivers or anything cuz, i installed windows two times now each time this happened cuz i didnt knew what to do cuz i didnt had internet at the moment and all i wanted to do was play my games, please, understand my frustration, im also getting crashes in fallout 3, i cant get a certain part, COD4 was not executing in multiplayer mode, u can get the picture of my going nuts in front of my pc, how can i fix DEP, i know DEP is somehow good.. or is it not good, whats the best option to disable it or is something i did wrong can someone help me with this??

i did a litle research and i found out that it only blocked firefox and internet 32bit, but the 64 bit version works fine. so what windows is really trying to block

I had the same problem, but no one replied to me. Now I have no other option but to go back to vista home premium x86. One thing I doubt was this problem was caused due to some microsoft update, and that too some visual studio update....do you use visual studio in any case??