How to detect if Crystal Reports for Visual Studio 2008 is installed

I'm currently working on an installation procedure for an application written in C# which is using Crystal Reports Basic for Visual Studio 2008. I've downloaded 32bit and 64bit msi for runtime from https://wiki.sdn.sap.com/wiki/pages/viewpage.action?pageId=56787567 and included them in the installation and everything works well. My question is how can I detect if respective package is already installed on a target system in order to avoid starting the installation of it in that case.

Thanks in advance.