Sure can, If using msn messenger, be sertain tha you're using ver 6.2, otherwise transfer may fail. ANd dont communicate when transfering, may corrupt file.
As I am assuming the original poster meant our forums' private messages, the answer is no. There are several reasons for this -- one being the fact that we have 150,000+ members and if everybody would start sending out attachments via our system, I can't imasgine how much HDD space that would eventually consume. Second being the obvious liability issues -- if someone sends out a software that has virus in it or uses the PMs to distribute cracks, etc it might land us (as in AfterDawn Ltd) in trouble as well.