Don't Save for Proxy Passwords

I have a problem in that my site requires a firewall password, but I don't want SmartFTP to save it (in fact I can't -- it changes every 30 seconds with one of those RSA keyfob thingies). If I leave the proxy password field blank, it attempts to log in to the uber-secure proxy with a blank password (which, suprisingly, it doesn't accept).

Is there any solution for this, other than going to Tools|Settings|Proxy and re-entering my password before I make every connection? If not, it would be nice if there could be a "don't save password" checkbox on the proxy settings, and have SmartFTP prompt for the proxy password when it needs it.