Free SDK 2.02 and Standard Engine 5.0

Dear Friends: I have an application which uses the Standard Engine(?) 5.0 server. Periodically, I have to fix things in the database using "dbaccess". When I noticed in this newsgroup that the SDK2.02 could be downloaded for free, I thought I might take advantage of this--perhaps I could write a few little C routines to make expedite my work. So far, I can't quite figure out how to get this to work. After monkeying around a bit I am at the point where a simple test ESQL program gives me error 25507, which seems to have something to do with an ONCONFIG file, but as far as I can tell the 5.0 server doesn't even have one of these. Is it possible to do write code with the SDK2.02 and use it with a 5.0 server? If so, could you give me a pointer? Is there some extra piece I need to buy? I don't think I can upgrade the server--the database is part of a product for which we don't have source. We do have client-side run time licenses (obviously since we are running the software). I thank you for your time. P.S. I appologize for this naive question, but I haven't quite been able to pin this down. I know we're running the 5.0 release because that is the extension of all the files in the release directory, but how can I confirm that this is the Standard Engine. Is knowing that we run over TCP/IP instead of through shared memory sufficient to confirm this? Thank you. -Mike