I get an application error . application failed (0x0000005) error when I try to run any of the programs HDU, Clean Installer, Data Gen, anything like that. I beleive my pc recently updated itself w/netframe 2.0 could that be the reason or am I possibly missing some files? I did a clean up on my pc and ever since then I've been getting these error messages.

Having Net Framework 2.0 installed should not cause problems, you can have both 1.1 and 2.0 installed at the same time. Make sure you do have version 1.1 installed still.

I figured out the problem. All those programs have the same .dll file. I had them all stored in the same folder and they each over wrote the others .dll file making the prog not work. I cleaned them off my pc and gave them each their own folders and now they work properly.