unless you plan on giving the HDD to someone else there is no need to really wipe the drive. Just install windows from a DVD/USB drive, and then when you select the SSD erase all the partitions until it is one big unallocated drive. Then select it and hit next.
Just make sure the 1TB isn't plugged in when you install it.
then once windows is installed you can just plug your hard drive back in and do a simple right click and format it.