Report Builder install

We have installed Visual Studio 2005. I made a model and posted it to the report server. My LAN Admin can see the Reports Builder icon on the report server. I do not. I do see my model, but have no ability to click open the report builder. My LAN Admin gave me several permissions, I am admin on my own machine, and I do have .net 2.0 framework installed. Why do I not get the report builder icon on my report server page? ThanksYou need permission to the Execute Report Definitions task, which is included in the System User role by default.