Show link to manufacturer webpage in product detail

[jey09]

Hi People!
I 'm working on joomla 2.5 & Virtuemart 2.0.20b and I have a doubt.
Recently I have asked about putting a link to manufacturer's web page in every product of virtuemart.
I tried modifyng the manufacturer config. in the virtuemart menu, and adding the webpage, but it doesn't work.
I have active the "option" show manufacturer in configuration/template but I can't display the link to the manufacturer or the link to manufacturer page of virtuemart.

So, anyone can tell me how to make the manufacturer name in product page, a link to the manufacturer website?
I would do for each, but we have like 1700 products.

thanks