I downloaded and kept my all my software on the folder C:BI so the full path to my SpagoBI server is C:BIAll-In-One-SpagoBI-3.0-apache-tomcat-6.0.18-06212011. As you can see from the path above, I am using version 3.0 but you should download the latest version if it is available. Navigate to C:BIAll-In-One-SpagoBI-3.0-apache-tomcat-6.0.18-06212011apache-tomcat-6.0.18in and double click on the file startup.bat to start SpagoBI server. This takes relatively longer to start on windows as opposed to linux.