The attached file explains how to install SQL Server Management Studio. This program is required in order to manually backup the WAMS database. While the instructions are for 2012 version, for the most part the instructions apply to 2008 version as well.
Please note that we in our experience 2012 version is the version that is most likely to load without problems when using Server 2008, 64-bit. (in case you need 2012 version you can download it here SQL Server Management Studio and then choose the correct download on the next page)