Domain & Subdomain use with wordpress

Hi,

I am not sure if this has been answered before, if yes pl point me to coz I wasn’t able to get any search results for this.

I have a WordPress installed at http://nullpointer.debashish.com, till now I had http://www.debashish.com redirect to this page. Now I want to have a homepage at http://www.debashish.com that could show RSS Headlines from all my blogs, would have some posts about me (that won’t show up anywhere else). I want to use widgets to configure stuff on this homepage. How can create this page using the wordpress install at http://nullpointer.debashish.com. I understand that I can’t change the Blog URL to http://www.debashish.com because this will disturb all the permalinks of NullPointer blog that always have been at the subdomain.

I rally don’t want to have another WP install to do this.

Thanks for your time.