command line vulscan on server 2003

I've poked around on the discussions, and i can't find what i'm looking for.

Vulscan Switches for Windows Agents

this is helpful, but when i run for example from a command prompt (my present working directory is F:\)

vulscan.exe /showui=true

i get the following error

And when i run the command from the RUN command,

I get the following error:

I tried using %LDMS_CLIENT_DIR%\vulscan but that gave similar/same errors.

My environment paths don't have a LDMS_CLIENT_DIR statement, so that's why I assume it is failing and I get why on command prompt, directly from the main drive letter too, but darn it all....i shouldn't have to change to the LDclient directory to run vulscan.

Does anyone know of a way to run this without caring where the actual exe is, from command line or prompt?

thanks,