I opened up the map in Hammer, and I found that there where red these red boxes around everything! How can I get rid of them?

Those boxes are to show where models are, when viewed from great distance, so that not all models have to be rendered all the time. Zoom in on a box and it should change into the model it represents.

Or if you mean red boxes set out like a grid, that means that you have the 3D grid switched on. One of the buttons above the view windows switches it off.

Press the i key.

Teh Banzorlist wrote:
Username Ban Reason Time Until Unban
Portalboat http://developer.valvesoftware.com/wiki/ 22.41 hours

Shit just got real.

Hober wrote:
Shit just got real.

I don't get it.

Sleepwalker wrote:
I don't get it.

Awesome Man wrote:
Take about 5 dozen eggs, start putting them in a bowl, mix the FUCK out of them, and what do you get?

PENISSSSSSSSS!

Oh yeah, shit just got real!

I still don't get it.

Duffers, keep the spam to Off Topic. Thanks.