Hi.

i need to create a forum, like any other forum, but with couple of exceptions:

whenever a user posts a new thread he should fill the basic info for the thread (subject, message etc) and extra data that will be defined for each forum, the extra data can be a textbox, list box, checkboxes and more.

this data will be attached to the new thread and other users will be able to search threads with this criteria .

ill give an example :

lets say i have a forum for car maintenance and car technical data, i want that each new thread will contain a filed for car type, car model, gear type, model year and more.

i hope now it makes sense.

is there any model in the market that do that ?

if not, how complicated is to write one that do so ?

thanks for your help.