Newbie -> trusting public key via batch method

[Steve Kwong]

Thank you all for your help in passing a passphrase using --passphrase-fd.

I am trying to sign and encrypt a file using a public key which I have
imported.  However, I am prompted about the trust-worthiness of the public
key.  Is there a way to import a public key and place trust on it without
interactively editing the public key (gpg --edit-key <name>  ; trust ; 5)
such that when I try to use the key, I won't have to answer the prompt.

I am using ver 1.2.1 running on Win2K.

Thanks in advance.