TWO Quick question, & probably easy ones, too...

I've been gathering like 473298 tutorials for the past few days, some of which are for PSP. I've been translating them pretty easily to Photoshop, except for one thing:

Some PSP tutorials say "set layer to 'burn' at X% opacity." I thought, well, okay, there's a color burn & a linear burn in Photoshop, I'll just use one of those. However, it's been brought to my attention that the reason my icons keep coming out like crap is because these are NOT the same settings.

So, my question is, what is the Photoshop equivalent to PSP's burn setting?

Any/all help is greatly appreciated. :o)

{EDIT: also, am I correct in my assumption that the Photoshop's 'lumosity' setting is the same as PSP's 'luminance' setting?}

{EDIT #2: SOLVED! Thanks, snowflakie06!:o)}