Installing drivers in ubuntu

I just installed Ubuntu 10.4LTS on my machine and I'm having trouble following the driver install directions. I am told to execute this command in the 'linux source tree':

make include/linux/version.h.


How do I get to this source tree from a terminal?

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Please post what exact drivers you want to install... –  pbm Jul 7 '11 at 16:47
And a link to said directions. –  Faheem Mitha Jul 8 '11 at 6:17