how to merge the two together but can't seem to get it
One of the requirements is you have the most recent version of both MSN and yahoo installed. Once you have that, you must read and agree to the licence agreement for each program. The links above take you to those agreement's. After you have agreed and have installed the lastest versions, restart the IM programs. Once restarted, you can now add people from those other networks to the particular IM program you wish to use.

Simple right?

V/R
ID

P.S. Rabbit, thanks for reclarifying the link thing for me, I was still a bit unsure. I believe I have it understood now.