There are several places the Visual Studio might store a template.  Deleting the `.zip` file from any of the locations below should remove it from the list:

> * `%LocalAppData%\Microsoft\VisualStudio\10.0\Extensions`
> * `%LocalAppData%\Microsoft\VisualStudio\10.0\    -> ProjectTemplatesCache_{xx}`
> * `%UserProfile%\My Documents\Visual Studio 2010\Templates`

If the Template was installed via an extension, you can clear it out from the top directory above, or you can follow the [official instructions][removeTemplate]:

> `Tools` -> `Extension Manager` -> `Installed Extensions` -> `Templates` -> `YourTemplate` -> `[Uninstall|Disable]`

[removeTemplate]: http://msdn.microsoft.com/en-us/library/vstudio/dd293639(v=vs.100).aspx

I have an item template that I did wrong and want to delete. I deleted the zip file from the output location and ran devenv /installvstemplates and devenv /setup and when I opened VS and tried to add a new item it was still there. stranger still, I can still use it and create copies of the file, so it must exist somewhere. Is there somewhere that visual studio stores the files after being installed that I need to delete? I also cant change the template, it stays the same no matter what I do.

Edit: If it makes a difference I am using XNA GS 4.0