Date field in profile module SHOULD be filterable, and stored as a date or datestamp in the database

Hi,

I'm getting fool trying to do a simple web page of registered users with a customized profile having an availability date field and showing a view filtering by the date (user is available on August, September, or the next 2 months, etc...).

It would be extremely useful and simple with the "core" profile module, but as date fields are not filterable because are stored as serialized arrays (as I read in some posts) it's impossible.

My goals are:
1. Customized profile
2. Custom fields shown in the user registration form
3. Filter user lists (using a view) by a date field (if possible from the profile, not using extra modules)

I've tried (drupal 5+ bio module + cck + date API) getting some errors with a bug in views module...
I've tried (drupal 6 + content profile + cck + date API ) having problems because the content profile does not integrate in the "user registration form" so nice as does the BIO module (only in drupal 5)

I've been trying through all the modules for 2 weeks for something so simple as "Filter by date"...

I *REALLY* think Drupal would increase its usability and performance (and simplicity not using extra modules) if dates in profile module are stored as a date in the database (as Date module does...)

Thank you very much for all your support...