I have severe problems with TileSystem .

It doesn't run properly. I have done like the site says, but in the side bar I cannot see any tiles. Also it canot open the files provided, as it says on startup and when I try to open a file (.ts or .set). Any suggestions? Btw I still use Win 98 SE (yes I know it's old).

The .set files are just text files. If you tell it to open with notepad it should be fine. The .ts files are special files that only Tile System really understands. As far as making the tiles appear on the sidebar, open up the .set file you're trying to use and make sure the png files are actually in the folder it thinks they're in. Beyond that, sorry I can't think of anything useful.