Wordpress.com to Dreamhost


I am very new to creating websites. I created a website on wordpress.com and bought the .com domain. I have created context already on the wordpress site. I then realized you can not access plugins on wordpress.com. I then signed up with dreamhost and completed the transfer of domain to dreamhost. This was yesterday and they said it could take 5 days. In the meantime i tried to do the one-click install for wordpress and it told me that the directory was not empty and could not complete the install. My question is how do clear the directory and how do a move the current content to dreamhost? Do I have to wait till the transfer is complete?
thanks so much