Shoutbox

if it's in msgres.dll you'll need to use resource hacker to get rid of it.
give me a few minutes and i'll have a walkthrough for ya.

edit:

note:
this is modifying msn, which violates the eula, though you've already replaced msgres.dll, so this is a moot point

OKAY HERE'S HOW TO REALLY DO IT
1. reshacker http://www.angusj.com/resourcehacker/
2. msgres.dll
3. ctrl+f 20058
4. delete those two lines
5. compile
6. save and exit