how do I associate IPs and DNS aliases

[rakim]

Hi,

I added several IP (geolocated) to my Plesk 8.1 Unix server.
I have one serverroot for several domains (one typo3 installation serving several language versions).
I added domain aliases for this Plesk domain entry.
Now I would like to associate each domain to a separate IP.
It seems that, via Plesk, you can only assign 1 IP to a hosting account.
I could do that easy thru modifying the conf file but I want to do that thru Plesk .
I don't think I can do that thru vhost.conf as I can not use :
<VirtualHost 99.99.99.99:80>
ServerName Mydomain.com:80
in vhost.conf...

Can someone help me ?

Thanks in advance,
Rakim