Check or Changing the System date :-
For checking the system date you need to follow these steps:-
1. Type command on the run option of your window(run->Command).
2.you will get command interface like this c:\>type date on dos prompt then press Enter( c:\>date->press Enter).
you will get interface like this:-
Current date is Mon 02-21-2006
Enter new date (mm-dd-yy): _
now you will get the prompt for entering new date. you can put in format month-day-year and press enter.
You can also use a slash(/) or a period to separate the numbers. Whichever you use, if you don't do it exactly right (in other words, in a way that MS-DOS recognizes), MS-DOS displays Invalid date and prompts you to try again. If you make a mistake or enter the wrong date, don't be alarmed. As you'll soon see, it's easy to fix such errors.