Mudguard - it looks great, it's a good idea, but you are a glutton for punishment. Us Mudcatters are playing everywhere! We'll bury you with dates. Maybe restrict input to Mudcat members, maybe even to Mudcat calendar members - not to keep people out but to give best advantage to those strong supporters of the Mudcat Forum.

Also, might I suggest that you create an Excel spreadsheet form that calendar subscribers can download from the calendar site and use as their calendar date entry form. Build the form so that it has fixed field lengths, and fixed field formats to ensure accurate data input. The you can write a little program tha imports the calendar updates. Subscribers are responisble for accuracy of info.

I think if you try to do this manually, you'll be quickly buried!