More information is needed. Is this Foxpro for Windows or for DOS? What versions of Foxpro and Windows? Is the I/O card set up to use an I/O address and interrupt, the way DOS programs would require it? It's been a while, but iirc LPT1: uses IRQ7 at 378, and LPT2: uses IRQ5 at 278.
A Google search for "LQDSI5235" turns up links that may be useful for obtaining updated drivers.