Help with Sql Management Studio Vista install

I just recently purchased a sony with Vista business preloaded. It seems like it came with MS 2005 Sql Server but I'm not sure what edition. I went to the start menu to locate the Management Studio however the only option was the Configuration file. I went to MS site and downloaded the 2005 Sql Server Express Edition with Advance Service SP2 and it installed correctly. I believe this edition comes with Management Studio. However when I went to my Start Menu, the Management Studio file is still not there. How do I fix this problem? I am new to the MS Sql so a detail explanation will be appreciated. Thanks in advance.

Most things in setup are disabled by default, you have to explicitelly select it from the feature list during installation. You can go into Add/Remove Programs, Select Microsoft SQL Server 2005 and click Change to add more features.

Mike