No real simple solutions, but what could be expected from Windows;)..
1. Delete all partitions. make 3 PRIMARY partitions. Extended are just gonna mess things up. "Ranish partition manager" will let you make 3 primary partitions. download it now.
2. activate boot flag on the first partition in partition manager. THIS WILL MAKE IT c:. install windows1 on c:.
3. activate boot flag on the second partition in partition manager. THIS WILL MAKE IT c:. install windows2 on c:.
4. install "Extended Operating System Loader" aka XOSL on whatever partition is c: for the moment.
The third partition will always be e: and it will be great to save files to when formatting another time.
the first and second partition will will swap the letters c: and d: depending on which is active.
This is my solution. No need to make things harder than they are.