chickensushi

Well I recently downloaded MSN 6...the beta. Yes, i did something pretty awful. Well, it keeps on crashing so I've decided to get rid of it. However....I don't know why I can't get rid of it. Well, I tried to unistall it, then reinstall MSN messenger 5. However, it just keeps on changing to MSN 6. Is there a way that i can get rid of MSN 6 and bring back good old MSN messenger 5? Plz help!