Ok I have posted this earlier but something must have gone wrong so I post it again.
I have found an up to date skill planner on the shaiya forums and have already used it to plan my um archers build.
I can tell you one thing, if I hadn't used it there would certainly be a point where I wouldnt have enough points for very important skills.
It took me a while before I could use it properly, but I think I understand everything now, the help function is helpfull, and some trial and error as well.
If anyone has problems with the program I might help.
Helpfull hints:
The build planner is incomplete, so if you want to exactly plan your build it isn't that usefull.
If you want to use the skill planner I advise the auto-plan function, because with the normal function you have to put in skills level by level.
If you click on a skill already in the list you get a list with possible skills to choose from, you can delete the skill by clicking the tiny white bar on top
Here you can find the post in which you can download the level planner:
http://forums.aeriagames.com/viewtopic.php?t=317737
This can save you a skill reset stone
Edit: I forgot to mention a very important thing:
you can't save the skill list (hopefully a newer version will fix that bug) So if you want to save your skill list for later you should make screenshots. Do this by pressing the button with 'print screen' on it. Then go to a program such as paint and paste it (ctr+v)