Adword not making any sense , can anyone help?

I havent used adwords in years but i decided to give it a try because i got a free ad credit of 100 bucks.

Here's my beef , I am selling a guitar related DVD set , its a one page site with a an embedded video , the meta tags , heading , description , and everything else is relevant to my keyword terms.

However... And heres where I am totally lost...... All of my keywords are not triggering ads and in fact are ranked with a quality score of one , and also , it say my landing page quality score is poor.

My ad mentions the main keyword no less than three times , the keyword is in my domain name , and the description of what I am sellling is also relevant.

No affilliate links , no pop ups , no banners , all I have on there is a paypal button and a video clip other than the relvavant content.

I am only guessing but here is the only problem I can see , it is a new adwords account with no previous clicks which of course hurts the score , secondly , I am using a subdomain with the main keyword in front , other than that , everything is completely relevant , spam free , and optimized , but google still basically tells me that I suck.

And here is another weird thing , I did a search for my main keyword and the ads that popped up that they considered relevant were nothing more than sites with ads at the top for you to click and leave , where as my site is completey relevant to the search keywords and actually has content on it.

And finally , when I use the google tool and place my site in the box for google themselves to tell me what keywords to use , it comes back with absolutely nothing.

I am really at a loss on this one , I thought google was about relevance , and bare in mind , I am paying for the ads , not expecting any free traffic.

As I said I have been out of the loop with adwords for a while but the last time I used it , I don't remember having so many problems just trying to get some ads running!

And on top of all of this , my keywords really arent that competive as it is a specialized item , so any advice on this one would really be appreciated.

Could it be that there is no privacy policy or contact info , I did forget to ad that part , but other than that , I am totally lost on this one , thanks in advance for any help or advice.