How do I make commands start when I log in?

["Steven W. Orr" <steveo@xxxxxxxxxxx>]

I'm running kde-4.1.3 and I want xscreensaver and an xmodmap command to 
run when I log in. How do I do it?

TIA

-- 
Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
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individuals! What if this weren't a hypothetical question?
steveo at syslang.net
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