Ok, well this is hard to give regular updates due to the fact I have to torrent/play games for a hour or two before the problem occurs! So, I'm now torrenting with my bios change - if my network still drops, I'm going to change the channel to 14, then test again. Krunk Kracker, if all else fails, I may invest in one of those, but I'd like to get my network working with what I have currently, as I'm fed up with buying wireless devices
Cheers for the suggestion though, I will put that on my shopping list if I cannot resolve the problem. Thanks again for people's help, I'll update as and when to whether it's fixed or whether I need more troubleshooting help!