In order to play 3.0.8 you'll need to patch to 3946. By doing this (and I hope most of you have took the advice I gave -if not, don't worry) extract the pre-3.0.3 Folder and patch up. However, once you get to a NEW patching system (which is also the new WoW Launcher) cancel the patching. Do NOT allow this new patching system to finish it's update (you may also get a pop up saying that Windows is blocking a program) as this is what is causing people to over patch onto the 9506.
So, just to double check and make sure you understand: 9506 is the over patched version, and 3946 is the standard version needed to play.
However as I stated before, if you didn't make any pre-patched ZIP Folders, you can download the WoW repair tool. By doing this, click on this link:
http://ftp.blizzard.com/pub/wow/other/repair.zip
You'll get a pop up asking you to download the ZIP file, once you've downloaded it, extract and place into your current 3.0.8 Folder. Inside your WoW Folder, you'll need to click on Data - then delete the following two things that should be sitting inside your Data Folder:
patch.mpq and patch.mpq2 also, if you have it.
Once you've deleted these, use the repair tool you downloaded and click run and repair (check files). This will also tell you it's going to downpatch you to an earlier patch, which will be 3.0.1 - from there simply patch up, until you get to the new patching system (as explained above) again, do not let it patch up using the new system they have installed into the new Launcher. To avoid using the Launcher, go into your WoW Folder > and use the WoW.exe - this will skip the Launcher.
Once you've finished, edit the Realmlist to V.C.N which is:
set realmlist vcnelite.servegame.org
If you followed these instructions right, you'll be able to play on 3.0.8 now.
Any questions? Just ask away, simply send me a PM. Hope this helps, and good luck!