Question How hard is developing a custom module for drupal ?

[taylorray]

This may be a very relative question but I am asking it anyway. The thing is that I would like to use drupal for a site and it seems there is no module which supports my needs. Leaving me with the option to have to develop it myself.

I am intermediate with PHP / MySQL but do have a lot of experience with programming .... So my question is: How hard would it be to write a module yourself? And would it take ages to get into it? Cause I need to develop it quite fast ...

best Regards