Let me give you a tip so that you do not get teh wraith of some of the users here.
At the top of this page click on right side of page the Search bar (small one in size)
Then type in walkthrough
Then click on "Search this thread only" and then click on teh Search button.
IT will bring up a page with everything related to walkthrough for this Forum Topic only. In here you will see that there is already a latest version.
Give it a try.
IF you have done this and get nothing then you can at least say that you did search.
or you can ignore everything i said and just go here.
You must be registered to see the links
Any chances for the official walkthrough v6.8?