The "kraw" trojan is a false positive. Since TiT does multiple file conversions, it was programmed in a way that it could look suspicious (if a program can move, rename, decompress and sort that many files so quickly, it would make sense, but it's totally clean). And the first question you ask traces back to the source of the installation. If you have the CDs and run the game with the CD in the drive, you shouldn't have the issue. If it's another source, well, we unfortunately can't help you there.