I am designing a purchase order program using VBA and I keep getting a 'runtime error 9' when I run the code on an XP computer. The code does exactly what it is supposed to on Windows 7 in any version of excel. What do I need to tweak to make this work? The debug error comes up in the ability to open an outside document. I know the normal solution is check the spelling, however the same code works fine on all windows 7.

What do I need to do?