Unable to boot Windows 7 after unistalling Ubuntu Dual boot

After deleting the partition on which Ubuntu was installed and enlarging the windows partition to fill the old space at the same time( stupid I know), I am unable to boot to Windows 7. All I see is a command line message that says Unknown File System and on the next line says Grub Rescue> with the option to input commands. After looking at this forum and Ubuntu forums I'm still unable to resolve the issue. I would like to be able to boot into windows 7.

You'll have to restore your Master Boot Record. See this tutorial:

http://www.sevenforums.com/tutorials/20864-mbr-restore-windows-7-master-boot-record.html

Mark the Win7 partition Active, boot the DVD or Repair CD, click through to Recovery Tools list to run Startup Repair up to 3 separate times with reboots until Win7 starts up.
http://www.sevenforums.com/tutorials/71432-partition-mark-active.html
http://www.sevenforums.com/tutorials/105541-startup-repair-run-3-separate-times.html

Be aware that having GRUB on a Win7 HD can corrupt it requiring wiping the HD to clean reinstall. This is why it is best to keep Linux distros on separate HD's booted via BIOS and not afflict Win7 with GRUB.