How do I drive Konqueror from script?

[Krzysztof Żelechowski]

I am looking for a way to write a script for the SMS feature in KAddressBook.  
The script should go like this (in AppleScript pseudocode)

const kGateURL = "..."

on run
tell Konqueror
navigate to kGateURL
tell current document
tell form 0
set value of control "receiver" to %N
set value of control "message" to contents of file %F
reveal
end tell
end tell
end tell
end run

Please give me some hints how I could actually implement this tidbit.

Chris