This guide shows you how to create your .htaccess file and properly enable php5 on a 1and1.com hosted server.
Installing WordPress is typically a very simply task. Though when you install WordPress on a 1and1.com server, you will encounter various problems. I created a DIY that supplements the installation guide found on the WordPress.org website.
If you are installing WordPress on a 1and1.com server you will need both the installation guide from the WordPress.org website as well as my DIY to supplement the installation.
Here is my DIY...
http://thecyberfusion.com/2011/05/wordpress-1and1-com-hosting-%E2%80%93-install-diy/