Accepting just the boonex.com ip address

Hi People: If someone can help me with this one.

I want the customers be redirected to another site after he/she buy my products on the Boonex Market.

Thas site should accepts redirections just from the boonex.com site not for any other so that if anyone go to that url he/she cant get into to it unless came from the boonex market..

Any idea how can i achieve this? someone tell that with .htaccess i can  do it but it only accepts ip not names like boonex.com.

Thanks in Advance!,

Papik

You can still use the IP address for boonex.com, which is 173.192.32.152. I'm not really sure if that'd work, though.

Thanks Mangussoft.. it seems to work..

but what i need is this:  1-user buy a product on Dolphin Market

2-he/she should be redirected to an URL, enter some data and then receive the product customized for him/her by email

Problem is.. Dolphin Market Post dont allow redirects to other sites after buying...

Can't find a solution yet...if someone knows about how to do this or can give me a clue on it..

Thanks!

Papik