I had the same problem with Paragon Partition Manager, it would not display my partitions. I tried Hard Disk Manager Pro and that program displayed all of my partitions correctly but I could not assign a drive letter to any of the partitions. When I right click my mac partition, I don't get that option and the option to Assign a drive letter is grayed out in the dropdown menu (can't select). Am I doing something wrong? I tried running the program as "administrator" but that didn't help.
running 32bit of windows7
Ok, I was able to assign drive letters using ext2Fsd volume manager
and now it works! sweet!