a few weeks ago i unistalled it and tried to install pacsteam but the patches for it were no where to be found. so i unistalled pacsteam and tried to install and got that message.
Uninstall everything. Go to http://www.steampowered.com download Steam, register your product, download and install it. And you should be good to go. if you have any further problems contact Steam support at...
see i don't remember having to go to the website to download steam. i remember it being installed on the disk, its been a while since i had to reinstall it so that is why this was so noobish