Missing Dll - Unable To Run The Application?

in one of my previous posts, I wondered why it is that my application runs well on my laptop, but not on the laptop on my desk...When I run the application on the laptop on my work, it works...it loads...but the graphic part won't work. He gives a red cross with an OverFlow Exception, which he doesn't give when debugging on my own laptop. I checked for the memory use of the system and it only needs approx 100Mb when it's running the complete graphical part.
I was wondering whether it's possible that my laptop on my work doesn't have the right dll files to do it all. I only use standard dll-files from Visual Basic, so no downloaded dll files.Do you have to add somewhere that he has to include the Drawing.dll? because all the rest works really fine.