Magento

Hello
It feels like the installation is a bit shaky, getting different errors.
My installation of 1.0 doesn’t go very well my firs try went alright but then the products and category links didn’t show up.
Next try!  Deleting the DB and set it up again. after several min it stops and a white page shows and say “something went wrong on the server”
Is there some thred timeout that i can fix?
I backed up two pages and got this error
Error in file: “/usr/local/pem/vhosts/121589/webspace/httpdocs/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php” - SQLSTATE[42S01]: Base table or view already exists: 1050 Table ‘sales_order’ already exists
Have no clues