Transparancy in general

Hi all,
Now that RAD2 is over I can finally get some help here on my alpha issues. I've scrolled through some thread and read all kinds of new stuff I had never heard of before. Ztrans, transp, passindeces. I though I only had to set a z-index, which apparently wasn't enough.
I will be more than happy to write a tutorial on this, but I have no clue what all the new settings do. If someone can give me a breakdown here (even if it's in bullets), then I will try to fix my stuff and try to make it into a tutorial. This is too essential to not have something in depth be written about it.
Who can help me out?
Now that RAD2 is over I can finally get some help here on my alpha issues. I've scrolled through some thread and read all kinds of new stuff I had never heard of before. Ztrans, transp, passindeces. I though I only had to set a z-index, which apparently wasn't enough.
I will be more than happy to write a tutorial on this, but I have no clue what all the new settings do. If someone can give me a breakdown here (even if it's in bullets), then I will try to fix my stuff and try to make it into a tutorial. This is too essential to not have something in depth be written about it.
Who can help me out?