If so, d/l MBAM to a usb stick from that machine and try installing it on your hosed box.
I did a cursory search for 'dllhos.exe*32 COM Surrogate' and saw lots of references to it as a bug in the search results.
If it were my box, I'd try the system restore route first, using a restore point prior to when you installed that 'remote printer software' last week.
That would get you back to a point that you could again d/l stuff, and one of the first things I'd do afterward is grap MBAM, install it, and let it run a full scan.
Be sure to save any open docs first (.doc,xls, txt, etc), and they'll be untouched by the restore process.
Again > /.02
If you could get the mods to put this on one of the sidebars, some of FR's true geeks would likely drop in to help.
cheers