msn messenger in mac?:(

[dangawa]

hi all.. i bought my mac book yesterday. and they installed for me the msn messenger and it was working>>

but 2day when i try to open my msn messenger.. the program shows me an error said :

sighn in failed because ur password or user name is not correct...

i'm sure about my password and user name.. and i tried my brother's one and the same problem occur..

plzz can you help me solving this problem>>??

and have any 1 of u any idea about any program to be used insted of the msn messenger to be able to see colors in th nick names and activate the web cam??

waaiting for ur help ^_^

[Marchies]

Mercury messenger..=)