Re-size partitions?

I have a problem.
I have 2 partitions on my SSD.
One is 25 GB (Which I have Windows 7 on) and the other is 90 GB (Which I put other things on).

I am trying to install a Windows update and I can't because of low disk space. Is there any way I could re-size the 90 GB partition and add the space to the 25 GB partition?

Thanks! :smile: