I would like to add my 2 cents...
A VXD file is a virtual device driver (most typically associated with video drivers, though not exclusive to them), and VMM stands for something like Virtual Memory Management.
Your cure, if you take what I said, is simply to uninstall and reinstall your MSN.
True, that the memory references an actual memory allocation address, however, a problem of this nature is usually solved with a reinstallation of software. USUALLY being the keyword. Try uninstalling and reinstalling MSN before you go poking around inside your machine, especially if you have never been in there before.
To give you a better understanding of the VMM and VXDs, go to Microsoft's site, and do a search for VMM and VXD.
Good luck!!