Publishing WAP Content
After having my new wireless phone several days and a few calls to tech support I still wasn't able to visit any URL's typed in my phone's browser; I could only access content through T-mobile's portal. So I started digging around and this is a quick rundown of what I dug up to publish content online for my WAP phone.
 
Side-Note
These steps were preceeded by numerous "your client is not allowed to access the requested object" and obscure gateway errors.
 
Server Configuration
First off I couldn't determine if the requests were sent correctly and what was happening with the user-agent, request, etc so I checked my logs and it indicated my unique user-agent, that I was using http 1.1, and making GET requests, and a successful response by Apache (my site is hosted on version 1.3.x, and the response code was 200) so everything looked like I expected it to. Next, I started searching online for a module or server information which led me to w3.org where I found a posting related to WAP indicating I simply needed to make Apache aware of the WAP-type files as it responds to requests for this content (since the content-type is used in the request-response handshake that my phone and the server will do with each file request). As I don't have root access to the Apache conf(ig) files I simply put these extension-type declarations in an .htaccess file:
 

AddType text/vnd.wap.wml .wml 
AddType image/vnd.wap.wbmp .wbmp 
AddType application/vnd.wap.wmlc .wmlc 
AddType text/vnd.wap.wmlscript .wmls 
AddType application/vnd.wap.wmlscriptc .wmlsc

 
Have Apache redirect all wml-capable clients to a specific url: 
RewriteEngine on
RewriteCond %{HTTP_ACCEPT} text/vnd.wap.wml [NC]
RewriteCond %{HTTP_ACCEPT} !text/html 
RewriteRule ^/?$ http://host.tld/file.wml [L,R]

 
Authoring Content
WAP uses the various extensions you can see above with each AddType directive. .wbmp files are simply 2 bit (black and white) bitmaps and the extension was associated already (on my workstation) with ImageReady, indicating I could edit or create these types of images with Photoshop or ImageReady. (The Gimp would likely work too, but I didn't try it.) .wml is a form of XML and to get started I simply visited wap.yahoo.com and looked at the response from that host in my text editor (eg VIM or Notepad). To understand the markup I also visited w3schools WML section. Webmonkey also has an intro.
 
Now all I need to do is add some server side processing to these same extensions/content-types to mine data online (news, traffic conditions, possibly email, etc).