i'm not real proficient w/ WCG (how to view user's unhidden hosts and stuff) like i am with other projects, so assuming its not a project-specific problem (just for now), here are some of the host-side things i can think of that you might want to check. in the BOINC client's activities menu, is "use GPU always" selected? if you go into the tools menu and go to computing preferences, under the processor usage tab, is the "use GPU while computer is in use" box checked? you also might want to scour the WCG forums for any info regarding older GPUs such as yours. GPUs receive less and less support as they age in terms of both driver updates and DC applications.