Mac can't find Windows partition

Hi, I installed Windows 7 on my Mac, but I didn't use the Bootcamp Assistant. I installed it directly from the Windows DVD by pressing alt at startup.

Now I have the problem, that Snow Leopard can't find the Windows partition, while Windows can find the Mac partition. I can only find the partition in Disk Utility under the name disk0s3, but not in Finder.

How can I fix it?

 

When I try it, nothing happen.

 

So does no one have an idea?

 

Of course.