Do u want to change the partition of hard drives without formatting???

Here is the way,
1)Right click the my computer and select manage>>computer management >>storage >>Disk Management
2)Right click any of the drive and select shrink volume to make the some of the space of the selected drive to be unallocated or select Extend volume to extend the size of the selected drive if there is already unallocated space
3)you can now allocate the unallocated space to a new drive by right clicking it , selecting New simple volume and followed by assigning the drive letter

using softwares with only keyboard

In any of the soft wares of windows ,if u want to use it with the only keyboard, then you can press alt and underlined letter say in the microsoftword 'F' is underlined for FILE ,so u should press ALT & F keys simultaneously, but in the latest versions letter is not underlined & the letter say F for File menu gets displayed when u press Alt as shown in screen shot

Is the toolbar of any program invisible??

Is the toolbar of any program invisible , you can make it visible by pressing Alt key
or
click on the organize >> layout >>menu bar as shown in fig

To take the snapshot of a screen u are in( windows os)

To take the snapshot of a screen u  are in press ctrl and prtsc (prtsc key can be found in the top line of keyboard) simultaneously
or
start> all programs>accessories> snipping tool
By using snipping tool u can take the screenshot of the part or entire screen.

multitasking in windows

This type of multitasking can be achieved by pressing ctrl , alt and tab keys simultaneously

The new interface of multitasking in windows 7

The above interface of multitasking in windows 7 can be achieved  by pressing ctrl , windows key and tab simultaneously