This is an SNES ROM converter that converts SFCs to SMCs, and SMC to SFCs. This tool is good for people who need to make their hard work an SMC file to use certain programs.
You must close any applications or processes that are using your ROM file to convert it.
Dude, I'll be frank here: while is nice of you to present this tool, and to see you're interested in the art of programming... I'll have to reject it, and suggest you go for showing it around in this forum instead. Why though? I'll go into the reasoning.
You know, SMWCentral is mainly a SMW Hacking site. So, the grand majority of the users would hack SMW (with few exceptions, including YI from snes games). Our main tool, Lunar Magic, can silently add a header to a ROM, and believe me, a lot of the tools in the site works with headered ROMs. So, I don't get the point of having this tool hosted, sorry for my bluntness. I commend you, though, for the fact it seems to be clean in the interface aspect, direct to the point.
Don't be discouraged, though - I just feel that, if you get to program things and continue as is, you could do great with new ideas and such. I wish you good luck.