Although I've read viruses on Linux are rare, I just installed and ran F_Prot.
At the end of the scan it reported no infections but 2 supicious files.
I looked through the report and found this -
intel-536EP-2.56.76.0/coredrv/coredrv.o could be infected with an unknown virus
It was the same file reported twice but in 2 different locations (the actual driver and a backup I have).
The file in question is from the driver for my Intel 536ep modem. Now I did have to modify the driver a bit to make it work with the 2.6 kernel so could this be reason it has shown up are is it likely a virus?
I hope I don't have to delete the driver because it took me ages to get it working.

Could you obtain the original version of the driver and run it past F-Prot? If it checks out OK, then I would feel sure your modifications simply triggered a false positive. The fact that the word "unknown" appears might support that opinion, since F-Prot's files are kept well up-to-date (and I'm assuming you have the latest version).

As obvious as your suggestion was, I didn't think of it.
I tried scanning the original driver I download (with F-Prot updated today) and there were no infections or suspicious files so it is obviously the modifications.
Thanks for the help.

You're more than welcome!