.htaccess question

[GeorgeTH]

...at least I hope it is an .htaccess question:

How can I make sure that all traffic goes to exactly the same URL?

My tgp picxs.com currently gets traffic to/from several options, all displaying the same page:
http://picxs.com/
http://www.picxs.com/
http://www.picxs.com/index.shtml
http://picxs.com/index.shtml

The problem with this is that in many referring stats programs you get also 4 different numbers under 'hits received', one for each of the options.
So how can I make sure that every surfer really loads exactly http://www.picxs.com/index.shtml (even it they typed only http://picxs.com/ into the address bar)?

I have the line

DirectoryIndex index.shtml index.html index.htm

in my .htaccess which basically makes certain that every possibility gets to see the same page, but this doesn't mean they have the same URL in their address bar! That's what I want to archive!

I hope I didn't explain this in a too convoluted way - Sorry - didn't know any better - GRIN