IP Address Blocking

[aftermoon]

Hi guys
How can I block some ip address from accessing my site. There is a register page for new users. and if they find disqualified, they should have been blocked from the site. How can I do this.
I 'm using ASP.NET.

any help will be appreciated.
thanks in advance

[DSJ]

Right-click on your project in IIS and choose the "Directory Security" tab. In the middle there's an option to specify IP address or Domain Names to deny access to.

[aftermoon]

thanks DSJ.
But Can I do it using ASP code?. Sometimes I may need to
block an IP range.(for eg:- - 245.24.45.* ).