a bit of a problem

I have a problem with my sites redirecting.
Both of my sites are redirecting, but I don't want that happening.
http://www.n33dlink.com redirects to the main page ( or at least it used to) whenever I called http://www.n33dlink.com/tmonster
and now the www.seodigg.n33dlink.com does the same whenever I add some external files. For example: http://www.seodigg.n33dlink.com/y_key_318d716621c9e3e8.html
which of course makes it hard for me to verify my site.
I have checked the .htaccess file and it has no such command. Neither have I added that through the Cpanel.
Can someone suggest what to do?

I just checked your links and they seem ok to me, or am i not understanding you correctly.

http://www.seodigg.n33dlink.com/y_ke...621c9e3e8.html
This link should show white page with some numbers on top.
And this one http://www.n33dlink.com/tmonster
Supposed to take You straight to the templates store.