i got the message that i was almost over the limit for PM's.
In the email, it said that I should either delete or archive them.

how would you archive your pm's?

LOL welcome to my world. You have the option inyour PMs to move them to folders.

and that is the "archiving"?

Archiving for me = deleting, but if you really need to save some, maybe some can be saved just as .txt files on your computer.

I save to my computer anything special the rest I delete.