Finally after almost 10 years

I've been a customer for a long time, but I never had a chance to use my vB4 mods. Now I can, vB4 is "end of life" and I have problems with members not being able to register my forum because they don't get the welcome message or whatever.

If I plan to upgrade to vB5, I can't afford to update all the mods, and I'm not sure if that will solve the problems I'm currently experiencing.