I have 2 customized modules for drupal 6 that was created a long ago. They are very simple calendar calculators.
I upgraded them using an online tool ([url removed, login to view]) , but there are still some fixes to do, and I do not understand enough drupal and php to fix it.
I cannot show the source code before accepting a bid, the 2 main files have about 1000 lines of code, commented. Two classes are used: calendar and phpmailer.
Who accepts the work accepts that the source code should never be published or used elsewhere. And accepts the confidentiality term.