Dual booting in my system one window xp and another window vista C:drive in xp D: in vista than I formated D: drive than also first time starting two option xp or vista than I want vista's option remove please give me solution soonly

<span> <p>To format your hard disk during Windows 7 <a href="http://www.whitecanyon.com/how-to-format-computer.php#">installation</a>, you'll need to start, or boot, your computer using the Windows 7 installation disc or USB flash drive.<br /> <ol> <li>Turn on your computer so that Windows starts normally, insert the Windows 7 installation disc or USB flash drive, and then shut down your computer.<br /><br /></li> <li>Restart your computer.<br /><br /></li> <li>Press any key when prompted, and then follow the instructions that appear.<br /><br /></li> <li>On the <b>Install Windows</b> page, enter your language and other preferences, and then click <b>Next</b>.<br /> <ul> <li>If the <b>Install Windows</b> page doesn't appear, and you're not asked to press any key, you might need to change some system settings. To learn how to do this, see <a href="http://windows.microsoft.com/en-us/windows7/Start-your-computer-from-a-Windows-7-installation-disc-or-USB-flash-drive">Start your computer from a Windows 7 installation disc or US</a></li> <li><a href="http://windows.microsoft.com/en-us/windows7/Start-your-computer-from-a-Windows-7-installation-disc-or-USB-flash-drive">flash drive</a>.</li></ul></li> <li>On the <b>Please read the license terms</b> page, if you accept</li></ol> <ol> <li> the license terms, click <b>I accept the license terms</b>, and then click <b>Next</b>.<br /><br /></li> <li>On the <b>Which type of installation do you want?</b> page, click <b>Custom</b>.<br /><br /></li> <li>On the <b>Where do you want to install Windows?</b> page, click <b>Drive options (advanced)</b>.<br /><br /></li> <li>Click the partition that you want to format and click <b>Format</b>.</li> <li> <ul> <li>If you have more than one partition on this hard drive and want to get rid them to make one big drive again, then select a partition and click on the <b>Delete</b> option for each partition. Once you have deleted all of the partitions, select thepartition and click <b>Format</b>.</li> <li><br /></li></ul></li> <li>Pick the formatting option that you want.<br /><br /></li> <li>When you've finished formatting, click <b>Next</b>.<br /><br /></li> <li>Follow the instructions to finish installing Windows 7, which include naming your computer and setting up an initial user account.<br /> <ul> <li>If you do not want to reinstall Windows 7, you can cancel the installation at this point and keep your newly formatted drives.</li></ul></li></ol></span>