You can probably also delete the file when booted into Safe Mode; it's most likely that the file won't be running in Safe Mode.
There's a larger issue though: you're obviously infected, and it's highly likely that the wndllsys.exe file is not the only "unwanted guest" on your system. You should have a read through the threads in our Viruses, Spyware, and other Nasties forum to find out how to check your system for further infections. If you find that you need more help along those lines, please start a new thread in that forum, as that is where we deal with those sorts of issues.
Reputation Points: 221
Solved Threads: 369
Wombat At Large
Offline 6,439 posts
since Dec 2003