Welcome to the board, Fenris!!!
You'll always find excellent help here! We've got the best posters on the web!!
You might find it useful to browse through the BEST TIPS thread to learn somethings about developing your characters. W&W is a very flexible game and there are more ways than one to develop the characters so they have the skills you really want. As a general rule of thumb, we recommend that you don't change a magic users class until they have learned the spells you really want them to have.
You might want to consider changing your Paladin to a Ranger to regain the ability to learn more higher level Vine spells. Or you might change one of your other characters. There are lots of ways to get the skills you need!
Hope we've been of help and we'll see more of you on the board!
Wyv