Can’t seem to get wordpress installed with an imported database

Hello. My hosting company is 1&1.com. At 1&1.com I have two separate accounts referred to as account A & B for this message. A has several months worth of valuable data in a MySQL database. I want to move that database to account B.

Did so far:
1. Created a folder in account B with the wordpress 2.7.1 from the downloaded install.
2. Created an MySQL database on B.
3. Exported the database on A and successfully imported it on B.

When I do the command: (in this case)
http://www.jgdatafeed.com/pete/wp-admin/install.php
I get a message that I need to clear old database tables first.

Also something worth mentioning – last week before I exported and imported the database, I had successfully created a word press account using the command I noted above ….the install.php. Of course it created the wordpress blog and looked great except I knew I was going to need all the exported data in it. Come today I completely deleted and reloaded the wordpress install directories within my site from the hosting company. I thought that would handle take care of the install I did last week.

I hope I explained this well enough. I am not sure if I need to rename the new wordpress directories and sub and use a different name for my blog. Thanks all.

Joanne