To Change Hard Disk Drive Letters

To change drive letters (useful if you have two drives and have partitioned the boot drive, but the secondary drive shows up as "D") 

Go to Start > Control Panel >Administrative Tools > Computer Management> Disk Management, 

Then right-click the partition whose name you want to change (click in the white area just below the word "Volume") and select
"change drive letter and paths." From here you can add, remove or change drive letters and paths to the partition.

To Change Hard Disk Drive Letters

Rename a Series of Files

When you download photos from your digital camera,
they often have unrecognizable names.You can rename several similar files at once with the following procedure. This also works for renaming other types of files.
 

1.Open the My Pictures folder. (Click Start, and then click My Pictures.) Or open another folder containing files that you want to rename.
 

2.Select the files you want to rename. If the files you want are not adjacent in the file list, press and hold CTRL, and then click each item to
select it.
 

3.On the File menu, click Rename.
 

4.Type the new name, and then press ENTER. All of the files in the series will be named in sequence using the new name you type. For example, if you type Birthday,the first will be named Birthday and subsequent files in the series will be named Birthday (1), Birthday (2), and so on. To specify the starting number for the series, type the starting number in parentheses after the new file name. The files in the series will be numbered in sequence starting with the number you type. For example, if you type Birthday (10), the other files will be named Birthday (11), Birthday (12), and so on.

Rename a Series of Files

Remove and protect ur pc from pendrive virus

If you want to protect your pc from pendrive virus follow the step:

1.Go to->Run->type "Regedit"->then a box appears->go to H KEY_CURRENT_USER\software\microsoft\windows\current Version\policies\Explore\No Drive 

2.Type autorun, ->
replace the "9d" into OXFF

Remove and protect ur pc from pendrive virus