FlashGet has a useful feature where you can tell it to hang up the modem or shut down the computer when it's done downloading. However, one thing I noticed is that then next time you go to use it, it still wants to shut down then computer or hang up the modem.
To use it, put the 3 files somewhere convenient. Edit setup.reg so that regedit finds FlashGet.reg in the current path and then run setup.reg. This will add a registry entry that runs FlashGet.reg to reset FlashGet every time Windows starts.