Heya, I'm new to using the Hammer editor, the topic title explains my question.

I did run a search, and I couldn't find anyone else who asked about this in the forum.. but if they did.. well I'm sorry about being a nuisance

You can use the "replace" button. Choose the texture you want to select on the right side, then check the "Don't replace textures (Mark chosen)" box.
I'm doing this from memory, so the names might be a bit different.

Good luck!

Okay thanks!