How do you block specific websites?

[PeterT]

Hi,
I have a need to block a couple of websites on my son's computer.
Please could you let me know how to do this without the computer asking for permission to access all websites via a password.
So if he logs onto the specific site there is no access but all other sites are fine.
The computer runs XP.

Thank you for your help,
PeterT

 

[PeterT]

Hi,
The computer is running XP with Sp 3 and internet explorer 7.
Any easy to follow instructions would be great!!

PeterT

 

[PeterT]

CaptainCrash, you are a star!!
It worked, well done and thank you ever so much.
Cheers,
PeterT