Everyone knows the situation, you want to add a new mod, but the ores doesn't generate in your generated chunks. I was really sick about it, so I decided to make a mod which allows you to regenerate a specific mod.
Therefore I had to edit some Forge classes, but it works perfectly.
The version 0.3.1 is the first stable version of it.
How it works
The mod creates a config file. By default no mod ares are regenerated, because it isn't activated.
Under the category "regeneration" there is a list of all WorldGenerators, you can disable and enable what ever you want. If you enable a mod's Worldgenerator in the config ALL ores and other World generation stuff (e. g. marble deposits from redpower) from that mod is regenerated in all Chunks you visit.