C-?; where ? is any other key that i would like to define;

[Bharat P. Savel]

how do i define a key in my .emacs file other than C-C ... or C-.. or C-x ...?
for instance if i define C-w in my file it bombs; do i have to define C-w 
(for example) as some control prefix or something like that? in which case
what is the format of that 'command'?

thanx
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Bharat P. Savel
EE Dept.                                       E-mail : savel at hoss.unl.edu
Univ of Nebraska-Lincoln                           Ph : (617) 983-0850