Linking modules when a lead is converted

I have created a new module 'Discovery' to capture extra lead data - there is a 1:1 relationship between the modules.

On conversion of the Lead I want this new module 'Discovery' to be linked to the new account created automatically - any ideas how I can do that.

At the moment I  have a 1:1 relationship between Accounts and Discovery and I can link them this way but I would like it to be automatic on Account creation from Lead Conversion