(Note: UOSteam is no longer maintained by its creators. Razor is recommended)
Follow this guide to download, install and run UOSteam.
1. Download and install the Microsoft Visual C++ Package:
Download Microsoft Visual C++ Package
Note: it is possible that you already have that installed, in this case just ignore this first step
2. Download and install UOSteam latest version:
UO Steam 184.108.40.206
3. Run UOSteam as administrator, type UO An Corp server information and click the "Start" button.