Can't find solution to problem - can I just start over?

I am new to WordPress - and have had problems since day one. Very frustrating. I am having serious problems with blank pages and I have spent countless hours trying to find a solution - to no avail. I am desperate to get this issue resolved. Since I cannot find a solution to my problem, I am wondering if I can just start over? If so, how do I go about this? I have no idea how to "deactivate" WordPress through Yahoo and then start over fresh.

I am using WordPress through a link from my Yahoo web hosting account (WordPress version 2.3.3). I have the Atahualpa theme currently installed and I really love this theme and would like to use it successfully. I have imported blog posts from Moving Type, as well as added a few new posts within WordPress. But again, I CANNOT get these blank pages to go away! If I "start over", will all these posts be wiped out? Our blog is at http://site.escapadedirect.com/blog2

I appreciate ANY input! I'm desperate to get this WordPress blog working!

Thank you sincerely for any help.

JD