Service Pack 4 installed, but we do recommend you update to this Service Pack. This video shows you how to check for the Service Pack (checks for Service Pack 1 in video):
If you know you need to install Service Pack 4, download it here (warning this may take 15-20 minutes).
If you do not have ArcInfo and 3D Analyst and Spatial Analyst extensions, we will provide you with a fully functioning Education Edition, valid for one year. We will have to UNINSTALL your current version of ArcGIS, and then install the Education Edition (note that the ArcGIS Administrator can be used to switch this license from the Education Edition over to whatever license you or your company may have without uninstalling the software). Note that these installations require administrator privileges on the computer.
here for how to check if you extensions are enabled, or watch this video: