Editing an .inf file to remove prompts?

[jbm]

I trying to silently install a program that was in

a selfextracting zip that required a password.

I unzipped it and used winrar to repack it so it

didn't ask for a password. But it still prompts

for the installation directory. Is it possible

to change this by editing the .inf file?

The program is Regvac version 3.0 registered version.

I also tried using Installrite but I kept getting

errors saying memory could not be accessed when

I tried to make an install kit.

Thanks for any help.

[jbm]

I used AutoIT

[totoymola]

I unzipped it and used winrar to repack it so it

didn't ask for a password. But it still prompts

for the installation directory.

What directory? Directory for its extraction? Or directory for its installation?