ok
well i got a reply from steam so here it is
A staff member has replied to your question:
Hello,
Please exit Steam, then go to the C:\Program Files\Steam directory (this is the default with a Steam installation - if you set a different installation directory, you will need to browse to it), and delete all of the files except for:
Steam.exe
And the folder:
\SteamApps\
Then restart Steam. This should correct the issue.