Thanks for the compliments guys... a lot went into this one.
Hi Wolf...your new mod downloaded OK but there is no interface when I loaded it

.
Sorry to be a PITA...but I'm excited about playing Poland...!!!

. Hope your kids are OK.
Kids are fine... just a routine checkup.
Don't take this wrong, but you've got to be doing something wrong on your end. Once again, hard to say exactly what without sitting in front of your monitor.
What exactly do you mean by "no interface" when you loaded it? Do you mean the main Civ4 Menu, starting a game in the Wolf-Mod or what? Also, what exactly do you see on the screen (or not see)... the more descriptive you get, the easier it will be for me to diagnose your problem.
I'm going to back-up to some more "duh" stuff again, because really, starting the mod should not be hard or difficult. Especially with the new version, it should just be A) Download, B) Unzip, C) Start BtS, D) Load Mod, E) Play Game.
The simple stuff:
First Confirm what version you have of BtS... in-game, click on "Advanced" and "About this Build"... it should say "Civ Version: 317"... okay, now get the mod installed!
1) Download the mod (I assume this is done)
2) Delete any old versions of the Wolfshanze Mod from you "Beyond the Sword/Mods" directory.
3) Unzip the Mod into your "Beyond the Sword/Mods" directory... I recommend using
WinZip for the sake of clarity, though WinXP will also do it native... but in WinZip there is a "Use Folder Names" option which should be checked... in the end, you should see "Beyond the Sword/Mods/Wolfshanze" directory... there should be multiple sub-directories in the Wolfshanze Mod as well, including Assets and PrivateMaps amongst others.
4) Start up BtS.
5) Go to Advanced menu and select: "Load Mod".
6) Load the "Wolfshanze" mod.
7) You should now see "Wolfshanze" in the top-right corner of the screen.
8) Should be up and running... the Civilopedia from the main menu should show some of the new graphics (all are revealed in-game) as well as the new units (like Dreadnoughts and Battering Rams) as well as the new Civs like Poland and Austria.
Once again sorry if the above sounds like "duh" stuff, but I really think you're missing something here... there's no reason why the mod shouldn't run properly right off the download. Also, what are your system specs... CPU, system memory, video card and Operating System?!?!?