Need help to hide URL on blog

Just installed WordPress 2.6. I have a domain called “name1.com” that is my main hosting domain at 1and1.com. I have another domain name called “name2.com” which is really just a folder/dir called “other” on name1. So when I type in http://www.name2.com/blog it changes to http://www.name1.com/other/blog, which is correct to see the blog.

I want http://www.name2.com to stay in the URL that is visible at the top. I don’t want visitors to see my name1.com/other domain name.

Any suggestions on how best to do this?

Thanks.