using ACCESS form field contents

Using ACCESS form field contents to provide parameter for a dos command.

I need to run a novell dos command ‘rconsole’ with a parameter that is the contents of a field populated after a combo box value has been selected. What I’m trying to do is automate the command to find the server name and prompt me for a password right away, rather than scrolling through the network to find the server name. I’m stumped here. Any help would be greatly appreciated.