Deleting dual operating system

To be frank with, I thought of dumping windows and switch over to some new OS, I choosed Kubuntu and installed it some 4 months before, parallely along with my existing Windows XP. It was a good start for me to learn some new stuffs even it was a bit alien to me. Initial days I used to spend ample time in learning things like, configuring my home networking and hosting websites etc, but I felt a kind of bored to search for softwares and unpacking them and installing it through commands...

Today I decided to uninstall Kubuntu completely, leaving my system to operate with windows XP alone. I did some googling and found that firstly I have to disable the Grub [ screen which loads at the start up from where one can choose whichever operating system to boot into]. Before getting into the Troubleshooting Steps, one more thing which is to be noted is that the drive in which you install the other operating system [Kubuntu in my case], can't be seen in windows OS.
Steps which I got from Google looked easy but what the hardest part was that after deleting the drive, it got attached with one of the pre-existing drives and showed as unallocated space. It had all my softwares and personal photos too. I seeked help from one of my friend, he suggested me to recover the data using a software called:- GetDataBack for NTFS, which I was able to get it from the following link:-

http://download.cnet.com/GetDataBack-for-NTFS/3000-2242_4-10061737.html

It ran for some half an hour and to my surprise it got even the data which I lost long back.

So, this is what the steps which I followed.

1. Went into Windows recovery mode and entered the following command
   fixmbr- to delete the dual OS mode at start up.
2. Restarted the system and now able to see only the single boot option at the start up.
3. Since unable to see the drive in MY-COMPUTER , Went to disk management [Right Click on My Computer-Click on Manage-Disk Management] and deleted the drive which I was using for Kubuntu.
4. Ran the GetDataBack software and able to recover the data from the unallocated space.
5. Format the free space back to valid drives.