I've looked around and found out about TabServ and how it works. I like the idea and want to make my own version of something like this, I already figured out how to code the server-side part of the manager, but I need some help with making the actual MSN patch, I understand it's basically search and replace, but I was wondering if anyone here can show me a good patching program or help me make that part of the patch.

Thanks.

for 6.1.0211 it is:
Offset: 0x000206C0
Max length: 56 bytes (including null-byte)

for 6.2.0133 it is:
Offset: 0x00022A48
Max length: 56 bytes (including null-byte)

for 6.2.0137 it is:
Offset: 0x00022A48
Max length: 56 bytes (including null-byte)

So at that location you need to change "http://config.messenger.msn.com/Config/MsgrConfig.asmx" to your used URL...
And you can do this with any programming language. It's indeed just going to that location and write your own string (and terminate with a null-byte), close the file and you're done...

PS: So, I take it that your serverside script is ASMX? otherwise it wouldn't work...

Does it actually need ASMX to work? I was thinking as long as I can output the xml code, it'll still work, I was planning on using PHP.

Thanks

as long as you can provide a valid answer in a valid way to the requests made by msn messenger to your server, it will work. And since the communication is done by a certain way, you will need to use that way (asmx).....

maybe this will interest you:
http://shoutbox.menthix.net/showthread.php?tid=20641