Non-existant folders??

Hi, I'm creating a little app whereby people will be able to create a simple site for themselves (maybe 10 html pages). here's the problem: say their company is called "companyname" and my site is called "www.mysite.com" i'd like their site to be located at "http://www.mysite.com/companyname" Is there a way i can do this without creating indivual folders for each company.I'd like the whole creation process to be automated. I'm sure the ftp functions in php would allow for the generation of new folders for each,but since all content/style etc. will be pulled from a DB it's seems to me a little pointless having all these folders with the same php page in each.essentially i'd like a php script to run automatically each time taking what looks like a folder name and making a call to the db using this name as a variable. easy,difficult or impossible? thanx, adrian