using regex to remove $ sign

[Kun]

i have an html/cgi input that takes in values to a mysql database, 
however, if i stick in $20 instead of 20, it crashes the program because 
of the extra $ sign.  I was wondering if anyone has a quick regular 
expression in python to remove the $-sign if it is present in the input.
-- 
http://mail.python.org/mailman/listinfo/python-list