Thanks Dori. Let me go step by step what i did :

• i installed Word Press using Fantastico to my domain name www.evdenisyapiyorum.com without giving a directory name. I wanted my blog to be my website at the same time.
• However even though i can log in to Admin URL: http://evdenisyapiyorum.com/wp-admin/ and post my articles using Word Press, i can not see them on my site www.evdenisyapiyorum.com. There is a blank screen.
• Yesterday i thought it was related to my indexing/files. I checked index manager using voda host control panel, there is no problem.

Any idea what might be wrong with my setup ? I am sure it is not related to Word Press.