Be aware though that with OpsMgr R2 the MP guide is still needed. Read this posting how to go about it.
Mostly because the MPs are packaged as a msi-file. When one runs this file the local msi-database gets filled up with all kind of unneeded information about installed programs which are mostly unpacked MPs.
With a free MSI-editor/-unpacker/-viewer the installation of the msi-file isn’t needed. Simply run the MSI-editor/-unpacker/-viewer, open the msi-file and in the same folder where the msi-file resides a new folder will be created, containing all files which are to be found within the msi-file, without filling-up the local msi-database with all kinds of unneeded information.
This free tool can be downloaded here. I have used it on Windows Vista without any problems and now I use it on Windows 7 as well, also without any problems.