how to record what i see, when i use ...

[Nic]

Hope u can help me,
my situation is ....
IF i want to record the video / images shown ,
when i chat with my friend through MSN or Yahoo Messenger
Web Cam Chat,
How can i do it ??? Which software i should use, where to
download??
U know, i dont have web cam, just my friends have it !!
So i can see them of course !!
Do i need to buy a web cam then in order to record my
friends' images / video ??
thank you !
waiting eagerly !!!
I just want a economical way to make the above matter
done !!
T.