Well, all you need to do to get files to appear in the window is: copy the SBI files that you download from Sbiffy!com into the c:\Sbinducr\SBI\ directory. Any SBI files inside that directory will appear in the window.
However - I don't think SBInducer will recognize the files if they have a zip extension (which is something that Win XP adds a lot of times when you download SBI files), so, if you already have SBI files in your SBI directory, and they are still not showing up, then I would suggest checking to make sure WinXP didn't automatically add the ZIP extension to the end of them.
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