Why isn't my site getting indexed properly?

[Rick Sample]

I notice when you type soemething in google, then click on someones page, it goes directly to that page.

For example:
If in google you type in 2005 ford mustang, then click someones link that comes up, it goes directly to www.example.com/2005mustang.html

For some reason google is only indexing my home page. Is their anyway they can index my entire site? Even in my referal site statistics, every page comming in is my .index page. Is something wrong with my HTML?

Any help on this problem would be awsome! I really don't want to submit page by page,

Thanks guys..