Hi there , I've read this post about getting a ms fix for wow
http://www.sk-gaming.com/content/15500-Smart_fix_allows_you_to_drop_your_ping_by_150
But as it says it is for XP only.. and I cant find a working hotfix for vista .
Is it anyone here that could help me ?

Step 2 - TCPNoDelay
This one is pretty simple (Discussed here)

Type "regedit" in windows "run.." dialog to bring up registry menu

Then find:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSMQ\Paramet
ers

Right-click in the right hand pane and add a new DWORD value, name it TCPNoDelay, then right click the entry and click Modify and assign a value of 1.

Click Ok and close the registry editor, then reboot your PC.
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This is the one I need a fix for .