How to check the OS version and Service Pack of Windows 7

Yesterday, I've created the step by step guide on how to check OS version using Windows XP and I've noticed that indeed everyone is quite unsure of  it. Thus, it came up to my mind that other Windows users need help too. Luckily, my dad's laptop is Windows 7. Viola! I borrowed it and teach him. He said, "I never thought this could be so easy." 

So here is it. A step by step guide on how to check the OS version and service pack of Windows XP...

How to make a screenshot using Windows XP?

My dad, who is 55 years of age, is not techy person. He recently approach me and ask if my phone's camera is working. I've asked him why do you need it for?

He told me that he needs to take a shoot for the payment he made to the bank so he can forward it to them via an email. So I laugh and told him that you do not need that because you're laptop can do that. He was amazed and asked me how. Well, told him that all he need...