I am having the same problems with the error on line 536 and 258 as well. I am using the comdlg32.ocx from my windows xp install, I do not have a copy on my server 2003 machine, and I did not find one mounting the vista install.wim either. I am using PE 2.0 btw. I have a cmd that copies all of the files and the img dir and it's contents to the X:\windows\system32 just to eliminate problems with the permissions. The img dir is there and correct, the only time I have problems I have is when I click on the browse button, I get those errors. If I could get that working, that would be uber slick! Thanks guys for your work on these HTA's, they are going to be killer! I also have all of the packages installed for PE 2.0