I'm working on a dll for our fax server in Visual C++ using a header file provided by Gammafax(the company we got the boards from)and when I try to compile it it gives me these error:

gfaxnt.obj : error LNK2001: unresolved external symbol _gfqSubmit
gfaxnt.obj : error LNK2001: unresolved external symbol _gfqClearRec
gfaxnt.obj : error LNK2001: unresolved external symbol _gfqFindFirst
gfaxnt.obj : error LNK2001: unresolved external symbol _gfqFindNext
gfaxnt.obj : error LNK2001: unresolved external symbol _gfqPurgeAll
gfaxnt.obj : error LNK2001: unresolved external symbol _gfqPurgeOne

This is a pretty need dll, so if someone could please respond quickly I would really appreciate it.

Thanks.