Please help me

I have installed drupal 6.14 and setup a very small website using some built in modules that is provided at drupal.org when i am running my website on xampp-win32-1.5.1 it is running properly but if i changed the version of xampp 1.5 to 1.6.0 then there is something fault with my website home page is loaded successfully but if you click on any link then the website will automatically redirect to xampp`s home page for example
my website is http://localhost/website/node/2 is my home page is loaded successfully on xampp 1.6 all the location of link is okie while i am mouse hover on it, title is OK in short home page is working all right but if i am click on any link then the page will automatically redirect to http://localhost/xampp no link is working
if i am typing the address except the home in the address bar for example http://localhost/website/node/38 then also i am facing same problem..
I can not figured out this problem what is the actual reason behind this..
I try a lot but still facing same problem...
please help me on this problem.
thanks in advance.

Is My Xampp is not working or my code is wrong or drupal have any issue like this...