Vinter - :
I read somewhere that I can use fullduplex communication in the same
PC with Messenger (as if I talk accross the Internet with a remote
user).
Yes, you can do that with Windows Messenger (which only exists under Win
2000 and XP) and/or MSN Messenger.
Can someone elaborate the conditions to do it (O/S, Messneger
Version, etc)?
I guess it works with every version of Windows, but I never tried it in
Windows 9x/ME.
Only MSN Messenger can be used under Windows 9x/ME, of course.
Is ther also some guide how to do it?
It's really simple, actually.
Create two .Net Passport accounts.
In Win 2000/XP, you can load Windows Messenger and MSN Messenger
simultaneously. So, just sign in in each of them using Passport account n°1
in Windows Messenger and Passport account n°2 in MSN Messenger; then, add
Passport account n°1 as a new contact in MSN Messenger, and Passport account
n°2 as a new contact in Windows Messenger.
Invite the new contact to a voice conversation.
In Windows 9x/ME, you have to use MSN Messenger and a third-party utility to
load two instances of it, like Jnrzloader for example:
http://www.jnrzsystems.tk/
Then, same method than above for the voice conversation.
Using MSN Messenger plus Jnrzloader (or Windows Messenger plus Jnrzloader)
in Win 2000/XP is possible, too.
It's even possible to load multiple instances of MSN Messenger and/or Win
Messenger and have multiple voice conversations established on the same PC,
between MSN Messenger and Win Messenger, and/or between MSN Messenger and
MSN Messenger, and/or between Win Messenger and Win Messenger, every
combination works .
Of course, you need a lot of .Net Passport accounts to do that.