"Lee Michaels" wrote
I had a computer go down last week.
The tech suggested regular cleaning of the interior of the case every two
months.
I need something small, quiet and not scary to
tool phobic office workers (or wives). Any suggestions?

I have one of these for use in the shop.
http://www.senco.com/CompressorDetails.aspx?k=PC1010

I find it handy to use for several blow...............uh.........purposes.
For use on a computer I set the regulator at 35-40 PSI.
And I use this blow gun:

http://www.grizzly.com/products/H8229/images/

Max