pointers on DSA and assymetric signature validation needed

From: Alex Crookes (alex_Crookes@hotmail.com)
Date: 10/28/02 

From: "Alex Crookes" <alex_Crookes@hotmail.com>
Date: Mon, 28 Oct 2002 06:34:11 -0800

I'm sure this is straight forward but crypto just scares
me...

Basically, I am putting together a little app for a
client for which I need to receive some command line
params. To prevent tampering, there is a DSA hash passed
as a signature. I have the public key, and I know how the
information passed is being used to create the signature.
How can I verify it? I've checked over the
system.security.cryptography.DSA namespace but can't see
anything that looks quite like what I need, specifically
where to put the public key (it's in a file, not a
certificate). ANyone have any code snippets or guidelines
on this?

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