Installing Office 365 and Office 2013 (Windows and Mac) 1  1. Visit the Office Setup page. 2  2. Enter your Office product key. 3  3. Sign in with your Microsoft Account.  4. Click the Install 1  button. 5. Click .Run to start the installation.  6. Follow the prompts in the 1  installer. 7. Stay online while Office installs.  8. Finish the installation.
It is the county seat of St. Clair County, and the seat of the Roman Catholic Diocese of Belleville, Belleville is the most populated city in the Metro-East region of the St. Louis Metropolitan Area and in Southern Illinois.
Belleville's City Hall. Belleville's City Hall is located at 101 S. Illinois St. and is one block south of the Public Square where Illinois State Route 159 and Main Streets intersect in the center of downtown. The current building was constructed in 1957. The Mayor, City Clerk and Treasurer have offices inside City Hall.