i need a code

Question

here is the problem where iam getting .

textbox1 ____textbox2_____textbox3

|                          |                          |

starttime         endtime            Result

09:00:00          15:00:00           6hrs:00min

 like this I took  3textboxes ,and one button name as "ok".wen I click on "OK-button" the tim6e difference between

textbox1 & textbox2  should be display in the textbox3.i need the code for this.

hope u understand,iam implemnting a project on employee timesheets.

pls send the code. 5