I'm not sure the precise mechanism used for handling PMs, so I don't know whether or not malware could be downloaded by opening one; but if you wish to be on the safe side, there are some things you could do.
A couple of precautions I would take would be to run a very thorough scan of your computer with both your anti-virus and anti-spyware programs as soon as possible. (Before you do, though, make sure that your anti-virus program has the latest virus definitions.)
Depending on how computer-savvy you are, you might want to check out the processes listed in the Task Manager to see if there is anything suspicious running.
You might also do a search of your entire hard drive for any files that have changed today, focusing in on any that have changed from the moment you opened the PM on.
Good luck.
Joy,
Lynn
