As he said Virgin didnt take out
[Mod edit (Gavin): removed]
Well - why dont you use some common sense here mate eh?
Try this
Start >> RUN >> CMD >> Black Box
ping
www.bbc.co.uk
Copy and paste the results
Again, in the black box
tracert
www.bbc.co.uk
Paste the results
Are you using a router? If so plug your Cable Moden Direct into the PC then run a speed test - DONT USE Speedtest.net its crap - use the one on this forum.
Antivirus / Spyware / Malware?? Got any??? Disable it - then run the speed test.
It doesnt take alot of sense to do some basic config tests.