The messaging client can recognize URLs (as well as phone numbers and e-mail addresses inside a MMS or SMS text) and will allow the user to perform actions on the chosen URL.
While viewing a message:
--> Select "Options"
--> scroll down to "Use Detail"
--> choose "Phone number", "E-mail address", or "Web address"
--> if any matching text is found in the message, you can highlight your choice
--> selecting "Options" again will give a menu of actions that can be performed on that URL (or phone number or e-mail address)... including opening the URL in the WAP browser.
No special process is needed when sending the message. Simply include a URL in standard format within the text of your message.