Hi,
Check http://www3.ca.com/securityadvisor/virusinfo/default.aspx this should give you removal instructions. Some viruses overwrite system required dll,s which makes difficult to remove.
Your virus scanner should have picked it up. If you haven,t got one try Vet, it works well with VFP, small footprint, doesn't use much CPU, like others, the URL is http://www.vet.com.au

>Hello all
>I got a Trojen virus on my computer. I try to delete to lsd_f3.dll that is associated with the Trojen but it is being used by an application and won't allow it to be deleted; even if I stop all processes.
>
>I need to delete this thing. Anyone know how I can?
>
>Thanks.