How do i determine which windows service pack i am using?

[cplspls]

How do i determine windows service pack i am using?

[Rameez.J]

Title Edited.

[Devasis]

For that you need to right click on My Computer then go to Properties, then click on General Tab, over there you will see whole configuration of your system and at the same time you will come to know which version of Windows are you using it along with it's service pack.