Can not sign in to Administrator

I had yellow Domains down load and install nopCommerce to my virtual sever I have with them. I loged into the Administrator section using my E-Mail and the default admin password. made some changes (ie the password and some other basic information,) now when I try to sign in to the administration area I get a message that the log in information is not correct. I have checked the informatiopn against a file I have in another secure location and it is what I changed it to. when I click the forgot password button it redirects me to a website with my store name and the message that Store is closed try again later. HOW do I get in to the admin section to continue changing and get my store on line?
I contacted Yellow Domain to ask that they reset my server but they said I had to contact you, that all they do is install the software on the server not handle any problems experienced after it is set up.

Yellow Domain also sugested I un-install and re-intall nopCommerce to fix the problem. Is this the only way to fix it? if so I amnot sure if nopCommerce is what I should be using.......

I figured it out. Even though I have been customizing the store, I need to find out HOw to change from default password to get into administration.

You can find your login info in the nop_customer section of your database and set the "is admin"  to 1.  That should give you admin access.