I had this trojan virus on my computer, I managed to get rid of it by now every so often my anti virus detects a plugin with its name on: BDS/BO2K in a file called system volume information/restore on the C drive. Is there any way to permanently rid my PC of this software?

Clear out all of your restore points as its stuck in one of them.

Thanks Curlyben, could you tell me how to do that, I'm on a windows XP computer?

Two ways to do this.

1/ Simply turn system restore off and on again.
Right click My Computer
Properties > System Restore Tab > Uncheck box > OK all messages > recheck box.
This removes ALL restore points.

2/ Open My Computer > Right click C: drive > General Tab > Disc Clean Up button > once it scans your system use the Other Tab > Clean up Restore points.

Option 1/ would probably be you best bet as this ensures all trace of this pest is removed.

Hope this helps

Nice one Curlyben that seems to have done, thanks a lot for your help!