I have a couple of friends that have BB's and from my understanding i can use BB messanger to messages them free. My question is how do i add them to my contacts. I've searched the forum but no luck

Add their PIN to their Address Book entry.
Once their PIN is in the entry, you can go into BlackBerry Messenger and add them there.

Thanks, one more question: How do i find my pin?

Options / Status will show you your PIN.

Thank again

and you can send a PIN msg to anyone whatever the phone company thru BB's servers! But only works with other BB's

I send pins to my wife all the time. easy and free! Makes text msgs obsolete if if I do have unlimited texts now!

I absolutely love BB Messenger. It's an IM client for the "Blackberrys Only" club. It's fast and keeps conversations threaded, which is sweet. I'd love for Blackberry to get threaded SMS messaging like the Treo does.