Computer Messenger

How con i use hotmail messenger without downloading it to my computer?
I wanna know if i download messenger to an USB (Kingston 2GB)and each time i connect the USB to my computer can i sign in to messenger? or what can i do, i don’t want to download messenger to the computer hard drive because my parents wont let me.
Ill give best answer to the first one to help me PLEASE
Ok, first off, you don’t need a program to access MSN.
Instead, use an online one. I will list a few, starting with my favorite MSN website.
http://www.ebuddy.com/
http://www.meebo.com/
http://iloveim.com/
And if you need to run a program from a flash drive, give these a try
http://portableapps.com/apps/internet/amsn_portable
and better…
http://portableapps.com/apps/internet/pidgin_portable
alright? try to obey your parents too.
How to hack someones computer by messenger