Well, I made it a bit further, and was able to convert the disk, but encountered a new issue.
The disk consist of two partitions, the boot info and the data info. I select both and it creates TWO vmdk files. I need these all in one VM... If I boot the first one, it loops "looking for files", if I boot the second one, it simply says "Invalid boot device". With disk2vhd I was able to select both partitions and have it create ONE file. Is this doable with vCenter?