Unable to access command prompt

I have a Windows 98SE box that I inherited. None of the command prompt or DOS Prompt menu options exist. I am not able to execute command.com to access a command prompt. When I attempt this, I receive an error message stating that there are not enough system resources available. I receive the same error message when I attempt to run any command line executable i.e. ping, tracert etc. . No other applications or services are running.
Any ideas? Thanks.