Graphing with Informix?

My company is running a turnkey Informix application, storing financial transactions for our clients. We've been pleased with this system, and are now looking to expand its capabilities. In particular, we would like to be able to make graphs of data from Informix. We're running off a Pentium SCO box, and have PCs running Windows for Workgroups. We're accessing Informix through xterms, so there's no networking between Informix and our PC software (in fact, if someone can point me towards a good starter book on ODBC, I'd appreciate it). We have FoxPro on the PCs, with Excel and Harvard Chart. What are our best options? To get UNIX software to do the graphs (we'll need names), or to set up the ODBC (as said, we'll need a pointer on how to get started) and do the graphing on the Windows side? Thanks for your help.