I have this _IsUser.dll which is Resource only dll. It holds one dialog box. When I use it to create Win 2000, Win NT and Win 98 install packages, i have no problem But on XP, that dialog box is not loaded. So, to debug, I created a project on XP, and loaded the dll. Then I did FindResource (hDll, "#102", "RT_DIALOG") with parameters..got back the handle to resource. Now, I did LoadResource, and got the handle to resource, but cud not display dialog box by DoModal. I keep getting access violation error. What am I doing wrong ?