Hi DasFox... you seem desperate with that problem
ok, let's see if i can do some good here...
I see a small problem on some commands.. maybe a copy/paste typo?? You have /dev/
rdisk0 and /dev/disk0;
with fdisk make sure you
always do /dev/
rdiskX!
About the System Reserved partition, get rid of it!!
Afaik, win 7 is the first windows system that creates it; it's were win 7 keeps the booter (amongst other things) and
it's the one that's marked as "active" (not windows partition). This partition is created only if there's no other windows
installation (e.g. if you have Vista installed on the first partition and install 7 to the second, System Reserved is not
created and the booter is installed on Vista partition) and if there's space available for "primary" partitions.
As mbr disks can only have 4 primary partitions, the easiest way to get rid of it, is by pre-partitioning the disk with
4 partitions and install windows to the first; after install you can do whatever you need with the rest of the disk.
After installing OS X set windows partition as active again and use boot0hfs so you can keep it active.
Also be careful with OS X Disk Utility; if you use it to format a partition, it will mark it as active
Besides this stuff, i don't see what can possibly be wrong..!?
Hope this helps.