While the tutorial itself only goes as far as explaining HOW to communicate the information in there should assist anyone thinking of creating their own Web<->SL application or business front-end. The information was collected from several sites taking and modified for direct socket communication over libraries for ease of integration, as while most PHP hosts have sockets enabled not many(from what I've seen, I'm pretty out of the loop as it were) do not provide XML libraries for immediate use, not to mention Firefox not having support of the XML ActiveX plugins that were used.
Any comments/suggestions/revisions you might have, please post them and I'll be more than happy to respond.
Enjoy!

Note: I've cleaned up the code as much as I can presentation wise, but my coding style is somewhat..relaxed so there could be cleaner ways of doing some of the things achieved, but for all intents of purpose it does exactly what it claims
HTTP<->XML-RPC Interface example for Second Life: http://www.othala.co.uk/SL_Scripting
For information regarding the conversion of USD to SLD and back again for ingame->RL purchases refer to this thread: /54/ba/173608/1.html
As I further develop techniques for communicating with an SQL based data server the tutorial will be updated, both on this thread and at Othala.co.uk
