Recently we blogged about new Yahoo! Messenger version which comes with tabs support but did you know the same feature exists since long time in Yahoo! Messenger?
Yes, that's true. Yahoo! Messenger has always supported tabs in IM windows but the feature was not enabled by default and Yahoo! team never announced it officially. The reason is unknown.
Anyway following tutorial was posted long time back for older Yahoo! Messenger versions and we are updating it for people who don't want to use new Yahoo! Messenger version but want to get the new tab feature in older versions.
NOTE: We have updated this tutorial with detailed information and new screenshots.
Recently we blogged about secret Multi-Login feature in Yahoo! messenger which allows you to run multiple instances of Yahoo! messenger and login using multiple Yahoo! accounts in a single system.
Now its time for another hidden secret feature in Yahoo! messenger which allows you to use Tabs in Yahoo! conversation / Chat windows just like a tab in web browsers. You can chat with several friends in a single window using tabs.

As you can see in the above screenshot, a single Yahoo! chat window is running with 5 tabs opened. You can click on a tab and starting chatting with that friend.
So without wasting any more time, lets start our simple and easy tutorial:
1. Type regedit in RUN or start menu search box and press Enter. It'll open Registry Editor.
2. Now go to following key:
HKEY_CURRENT_USER\Software\Yahoo\pager\
3. In right-side pane, create new DWORD Tabbed IM and set its value to 1 as shown in following screenshot:

4. That's it. Close Registry Editor and start Yahoo! Messenger. Now you can chat with all friends in a single chat window.
5. If you want to remove the tab feature, just delete the DWORD Tabbed IM or set its value to 0
PS: If you don't want to do the task manually and want a ready-made registry script to do the task automatically, just download following ZIP file, extract it and run the extracted REG file. It'll ask for confirmation, accept it:
NOTE: This method was only tested with Yahoo! Messenger 8.1 version but it should work with other versions as well.
This article was posted by VG in following section: Yahoo! Messenger.
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Jeet Chowdhury
thanks...
also for hiding ids....
Gaurish Sharma
Its a pretty handy feature, wonder why Yahoo choose to keep it secret
Navjot Singh
Does not work in Yahoo! Messenger 9.1.
And is that screenshot of 8.1 messenger or Vista version?
VG
^^ Its version 8.1 with my Vista theme for yahoo messenger. :)
Abbey
Can you help me with his problem please. where ever i try to chat on yahoo messenger i can't see whatever i type and i can see from my buddy but they can see mine what is the problem please
VG
^^ Please check following topic:
http://www.askvg.com/frequently-asked-problems-with-solutions/
Pete
using old 8.5 version and it worked in that version