iMac and SSD

Kilobyte Kid

iMac and SSD

I have an old white iMac (early 2009) model.  I would like to install a Crucial v4 drive and install Snow Leopard. The problem is this, when I go into Disk Utility to erase the drive, it will start to erase it then get about half way then fail.  I am guessing, this drive is compatible with Mac OS.  Currently, the drive is NTFS formatted and was used in a PC.  Again, the Mac does recognize the drive but I can't successfully erase the drive to install SL. 

 

How do I get this to work?  I would like to be able to erase the drive and use OS X Extended (Journaled) then install SL.  What am I missing here?