Please help!

Dear All,
Hi. Hope everything is smooth, going well. I have this little trouble I don’t know how to deal with.
I uploaded wp 3.0 via ftp.
I configured my wp-config.
I completed the 5 mins installation.
(Here is the problem)I have changed the forwarding link in General settings from https://xxxxxxx.com to https://xxxxxxx.com/home/ I was trying to do other arrangements and now I can’t get into the wp-admin/index.php although I reupload everything. It even says wordpress is already installed. When I try to login with the username and password I created before, it says:
“Not Found
The requested document was not found on this server”
and the link in the address bar is:
https://www.xxxxxxx.com/home/wp-login.php
I want to get rid of this “/home/” but I don’t know from where.
Thanks for your input and help.
All the best.
CD