Thought this deserved it's own thread, to help everyone out, all credit goes to Bloodhound.
Download this gadget.
Set it up for TF2...
Branch: 2009 (Orange Box)
Path: YourDrive:\Your Program Files Folder\Steam\steamapps\YourAccount\team fortress 2\tf (Set this up to go to your tf path, whatever it may be)
Hit Ok
Click Hammer
Map your ass off
@all sad mappers:
Try to start Hammer with the Gadget:
http://developer.valvesoftware.com/wiki/Source_SDK_Windows_Gadget
Download this gadget.
Set it up for TF2...
Branch: 2009 (Orange Box)
Path: YourDrive:\Your Program Files Folder\Steam\steamapps\YourAccount\team fortress 2\tf (Set this up to go to your tf path, whatever it may be)
Hit Ok
Click Hammer
Map your ass off