There should be a Lycanthrope Template that you can just add to the base character.
Create a Gnome (new creature (f5) option-PC Races) and level him up. Then go to the Classes Tab (lower DMGenie Panel main screen) and select the add Template option, add the Lycanthrope (make sure to follow the final pop up windows instructions - you have to add the apt Animal levels & Hp increase after) and you should be good to go.
If you want to Thrope him out before leveling. Use F5 and the Monsters tab...add the Lycanthrope Template and add it to a group. Do the Animal levels and then add Class Levels (off the above mentioned Classes Tab). Should work out well. I do this sometimes as we use a set order for creatures with Inherited Templates, or with Flaws/Traits (mainly for what we view as apt stacking, such as effects that multiply base speed, etc)
You can just add 1 level, then the template, then finish up leveling as well.
Note: I'm not using the most recent version atm, mainly due to lack of time to re-code everything (well lots anyhow) in our game for current DMGenie changes, so there may be some updates that I am unaware of. You might want to toss this up at the DMGenie forums (if their back up yet)
HTH
~Zym
Edit: I am also among those desperate for a program that will do...well basically everything DMGenie does (with some clean up and additions). But with Official WotC data sets for our multitude of source & splatbooks!