Hey,
Just re-booted my pc after virus problems and such, i re-downloaded hammer 3.4 and all the tools, set it up for Half-Life and then pressed File>New. The 4 windows never appeared, only Map1 minimised in the bottom left hand corner of hammer. Then the pc freezes and says that hammer is not responding. I Re-install hammer and the same still happens. Anyone know how i could solve this? ... I would download hammer 3.5 but the last time i had that, every time i entered the programme my configurations were lost :S