Windows 7 boot problems after partitioning Mac Disc

Hi

I got a big Problem. I installed Windows 7 with Bootcamp. I have a 600Gb Mac Partition and a 150Gb Bootcamp Partition.

After Configuring Windows, I switched to the Mac OSX Snow Leopard System. I changed the Main Partition of 600Gb into 3 smaller ones. After this change I can't boot Windows 7 anymore. With the Option Key it doesn't show me the Bootcamp Partition. In the Sys. Preferences under Startup Disk it show me the Windows on Bootcamp Partition, but when I click restart, it shows me only the No System Disk Boot black screen.

I read a bit in the forum, but I haven't found the problem yet.

Thx for your help

NESTi