Software Deployment

Hi, I am hitting my head against a wall and need any tips you guys have...

We captured Oracle's Application Desktop Integrator 7.1.26 into a MSI. That MSI works perfectly on Win2k. But now we are migrating to WinXP so have to retest/repackage this MSI.

After numerous recaptures, and reinstalls, I can't get ADI to launch as a regular user for the first time after install. If an administrator launches ADI, it opens fine, and then opens fine for any further users. It is just the initial launch that is a problem. Since we use Active Directory to deploy apps in our shop, this administrator problem is indeed a problem.

Here are some things I have done:
1) Captured the install of ADI and then also the initial launching of it as administrator. I figured if the initial launch registers dll's and such, Wise studio would detect it. But still have the same problem with this MSI as a regular user.
2) Ensured the regular user does have full write access to the folders and reg keys specified in ADI's install docs, but same problem I even tried to give full read/write access to every folder and sub folder on C:\ and every HKEY in the registery but same problem!!
3) If the user is added to a Power USers group, ADI does launch fine. But this is still not suitable in our shop.
4) From the local group policy editor, I gave the local Users group, access to every security role. Still the same problem!!!
5) I do have a bug report filed in with Oracle, but that may take a while for them to find a problem......
6) Ran a dependency checker, filemon, and regmon, to watch what happens when user and admin launch the app.. Nothing usefull found.

Since I gave the user full access to every folder and registry key, I don't beleive it is as simple as a file-system security issue (locked down too tight). But what else could it be? What else can I try?

Any ideas would be very appreciative.

Thanks