[RESOLVED] Installing 2005 .Net App

I created a very small 2005 .Net app for tersting, use my Vista 32 bit system. 1 form, 1 datasource (an Access 2003 DB), 1 DataGridView.
I published it and also created a setup project.

I installed it on my XP desktop and it ran fine.
I tried to install it on my XP laptop and when I ran "Setup" from the publish folder it said it couldn't install it and that I needed the assembly "Microsoft.StdFormat.dll" to be installed. I downloaded it and tried to install it using "regsvr32" but it failed, said it couldn't find an entry point.

When I try and run the app it say Window application has encountered a problem and must shut down.

FYI - The XP desktop has 2005 .Net installed on it, maybe that why the app runs on that machine.

I have alot of VB6 experience but this is my first .Net app.

EDIT - I created a new project, just had a single form, nothing else. I published it and ran the setup on my laptop. No problem.
Any help would be appriciated, Thanks