How in the heck do I "upgrade" a weapon? I have a night scope for a varmit rifle, and I cannot, for the life of me, figure out how to attach it.

Thanks in advance.

Highlight the gun in your Pip Boy and then look at the top right corner.

When in the pip-boy weapon menu, you'll see a small tab on the top right of it's screen called 'mods' light up when you have a compatible mod for your gun. You press the appropriate button and are magically taken to the weapon modding screen of goodness. On my (PC) game it's the x key.

For PS3, highlight gun and press L2

Thanks... I never saw that. I thought I had to be at a weapon bench...