emperor,
Are you trying to look for your executable in the "Start In" directory or a data file from within the application. If the answer is the first, then I would suggest learing some Microsoft shell scripting to be able to do this. If the answer is the second, then I suggest using the 'start path' input to either the File Dialog primative of the Open/Create/Replace.vi. You can get the current path of the VI, strip out the name of the VI and the executable name and then you have the same directory as the exe file so start in.
Randy Hoskin
Applications Engineer
National Instruments
http://www.ni.com/ask