Steps to partition and format HDD for Windows 7:
1. right click 'My Computer'
2. click 'Manage'
3. click 'Disk Management' on the left hand side
4. in the bottom graphical portion you will see your drive and it will most likely say 'Unallocated'
5. right-click somewhere on the unallocated space and choose 'New Simple Volume'
(the simple volume wizard will pop up and click 'next')
6. In the specify volume size step, click 'next' to confirm the size of the partition.
*NOTE*(the size will be displayed in MB) field should equal the size listed as the maximum disk space in MB. This means that you are making a partition that equals the entire size of the hard drive.
7. next it will ask you to give it a letter path, which ever one comes up as default is fine unless you just really want a different letter
8. it will prompt you to format the disk after you have made the partition, so go ahead and do that
*NOTE*when formatting for 'File System' choose NTFS unless you have a specific need to use a different one.
9. allocation unit size = default
10. uncheck the 'Perform quick format' so that standard format is done and make sure that 'Enable file and folder compression' is also unchecked
11. click 'OK' and click 'OK' again erase all data blah blah blah and it will start to go
there ya go, 11 simple steps
*NOTE*Windows 7 does NOT notify you that the drive format is complete.
The format will be complete when the status changes to 'Healthy' which will happen a few seconds after it gets to 100%
P.S.
If you need further detail on how to do this check out these web pages.
Format HDD
Partition HDD