Im in the process of finding an host for my website. 
I have created many folders with .html files in each folder.

Each folder is going to be an seperate subdomain.
example: 

Folder name...  NEWSUBDOMAIN
Subdomain...  http://NEWSUBDOMAIN.example.com/

Now, I havent found an host in which I can directly upload all the
folders
and have them work as subdomains directly. 

So, my other option is to find an program or script to run this url:

http://example.com:2082/frontend/default/subdomain/doadddomain.html?domain=NEWSUBDOMAIN&rootdomain=example.com

This above url would in turn create an subdomain called ...
NEWSUBDOMAIN
at the domain... http://NEWSUBDOMAIN.example.com/

Next, I have the folder/subdomain names in a txt file, one on each
line. I have 5700 names.

-----------------------------
In other words, I need to run 

http://example.com:2082/frontend/default/subdomain/doadddomain.html?domain=NEWSUBDOMAIN&rootdomain=example.com

5700+ times, with all the different folder/subdomain names in each
url.

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Request for Question Clarification by errol-ga on 15 May 2003 14:52 PDT

Hi there, Rayzun.

Which country do you need this service in?
There are many hosts in the UK and the US who offer unlimited sub
domains but I think they might object to 5700!
I'm not sure but it's possible that this may be out of the limits of
the domain/DNS system.

You should be able to add sub domains in the way that you described
with server side scripting.
Perl probably could, in fact a host I used had a control panel that
let me add the sub domains using this language but unless you have
100% control over the servers and DNS entries, you're going to be
typing each one in manually like I did.

Regards,
errol-ga.

the only way I have heard of to do this without bogging down dns is to
have a catch all dns entry set up so that *.yourdomain.com always
points to the same server. Then, a script running on the webserver
interprets the actual domain name used to get to the site, and loads
the appropriate content accordingly.

I know this is how it would work in theory, and have seen a couple
websites do this before, but unfortunatly, I do not know how to get it
working in practice.

Best of luck.