C-ISAM and WINDOWS, HELP

Hi there: I am trying to include cisam dos libraries (lfisam.lib) into a DB program in the form of a WINDOWS DLL. Unfortunately it does not compile and I got errors coming from the cisam library, specifically I got: c:\\informix\\lib\\lfisam.lib(isvalid.c): error L2029: '_exit': unresolved external c:\\informix\\lib\\lfisam.lib(getpid.c): error L2029: '_psp': unresolved external Is there any way around that? I guess I could define my own "exit" function but for _psp (global variable) I don't see any cure. _psp is not supported under WINDOWS but only under DOS. I know CISAM is not a WINDOWS product, but when I bought it, INFORMIX people told me that it was WINDOWS compatible, what does this mean (beside being able to run in a DOS session under WINDOWS)? Any help would be highly apreciated, you can get back to me directly and I'll post a summary to the net. Thanks a lot, Frank