Windows 7: Transferring OS from HDD to SSD

I'm getting a new SSD and i'm clueless what i need to do to get my drives setup like I want them to. I want to install the OS on the new SSD and remove everything from the old drive and make it completely blank. How do i do this?

Welcome to Windows Seven Forums.

Please check this excellent tutorial.

SSD - Install and Transfer the Operating System

Would it give me any sort of trouble if i installed windows on the new SSD and left the old installation on the HDD or is it necessary to remove the former OS from the HDD?

If you reinstall which is the best choice then once you activate on the SSD, if you start up the HDD it will soon ask you to reactivate it which you should not do to use the activation on the SSD. If you remove the key from HDD it will go non-geniune. It's best to only keep it slaved to the SSD to pull data off of it then wipe it, or keep it as a backup which you could later reactivate if you need to go back to it.

If you decide you're ready to wipe the HDD, open an Elevated Command Prompt
from Windows 7 on SSD and run Clean command: Clean and Clean All with Diskpart Command
then you can create and format new partitions in Disk Management: Partition or Volume - Create New