The signature creator from pastebin linked earlier did not work for me, only in some cases. (70-90%)
If you wanna test the signature I recommend double checking with http://bit.ly/34dgz6 which is how I found faulty ones.
The dll worked fine however with $gmt on Windows 7 64bit with latest mIRC, though you might wanna load it "on START" or else it will return 1 on the first run.