Is there a special add-on or an application, possibly web based, that I could use to co-browse websites with my friend?
So that I could see the contents of my friends screen, when he's surfing the net.

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http://theubimall.com - Something out-of-the-box
http://www.ubibay.com - Something more traditional

The simple, free option is Remote Desktop, comes built into all Windows PCs.
(Sorry for the late reply, have been inactive lately)

or you can try ideal administrator ( i don;t remember right now the link but it is a very useful software )

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I think this is the link to Ideal Administrator: Pointdev - Windows NT, XP, Vista, 2000 and 2003 administration tools

Although, by the looks of it, you get a 30day trial, after which you have to purchase the software

I find remote desktop a waist of time. I have a very old pc and with that I can't use it because it becomes like 1 fps

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http://img295.imageshack.us/img295/1...erssidemr8.jpg

Remote desktop only allows one user to use the computer at a time, so as soon as you login your friend will be kicked off. There is however a concurrent 'hack' for it, it was an official microsoft release but they decided to remove it in later versions for whatever reason.

I believe MSN messenger has this feature built in?

Otherwise I'd suggest UltraVNC or RealVNC(google it). Both of which offer a free edition and your friend will able give you control of the computer(so you may move the mouse etc) or only allow you to view the screen. It also allows multiple users to connect, so several people can [fight for] control or view his screen. I personally have been using UltraVNC for a few years now to manage servers.


Hope this helps.

Well, at first I would have recommended VNC and other similar remote control software, but if it's just the browser screen sharing you want, then why don't you try Screen2.com. It's free, simple and web-based.