Best thing to do is to delete the old script and write a 301 redirect using .htaccess, following is the code for example.
Redirect permanent /site/Asian http://survena.com/links/asian/
-or-
Redirect 301 /site/Asian http://survena.com/links/asian/
Put the redirect in you root .htaccess file and adjust the initial path accordingly. Write this line for every page that now has a new path.
Then you could put a robots.txt file in your root folder as well telling the robots what to crawl and not to crawl. Information on robots.txt can be found here:
http://www.robotstxt.org/
-or-
http://www.google.com/support/webmas...n&answer=40360
There is a free robots.txt generator for your site at (please take time to manually validate according to the guidelines above):
http://www.mcanerin.com/EN/search-engine/robots-txt.asp
Finally, to keep Google and others really happy, implement a sitemap on the site. Information on building sitemaps can be found at:
http://www.sitemaps.org/protocol.php
A great page to help you build your sitemaps is here (once again, edit carefully by hand and validate according to the guidelines above):
http://www.xml-sitemaps.com/
I learned all this the hard way. I had a pr5 site that was operating about 5 different scripts in different content areas of the site. Over a period of months i changed almost every script and my pr fell from 5 to 2 (and for one month to a 1). I realized I had a bunch of dead pages with largely duplicate content and started redirecting properly (big job as the site had over 700 pages of content) and my pr instantly bounced up to 3 again. The robots.txt helped me get back to 4 the next month where it sat for several months. I then decided to implement the sitemap and it hit 5 the very next month.
I have since sold the site, but it gave me an idea. I now periodically buy sites - mainsteam and adult - with good backlinks and poor pr, implement changes necessary to reduce spammy nature of the site, develop the content and watch SE hits grow.
All in all, it is alot of work, but at least do the redirect.