Module development and code questions

I have developed module there I have added the textbox and button.I wnat to submit the form on same page so that I can use the textbox value.
I tried $form['#action'] like

$form['#action'] = 'node/add/todo';
It is not working it gives me http://xxxxxxx.com/node/add/todo I want it to to at

I have one crazy question.....

Drupal : 5.0

I need to write a module.inn this module,

1. I need to get the install,access control options etc.
(So there will be some functions for implementing hooks)
2. i need to call some functions in the modules from some blocks like api calls.(not by using hooks).
( there will be some function which are to be called as APIs)

My blog, http://ahmad.indieoffset.com , this morning give some warning:

i have a site that I am been working in that is developed in 4.6. I inherited the site and have learned enough to create content, blocks etc. I learned the commands for bold, underline, italics etc. and am fairly proficient at using them now.

I tried my hand at creating a new site using 5.1 but none of the formatting commands that I have been using with the prior version do not appear to work. Is there a new formatting guide to follow?

The latest version of Views, VotingAPI, and Fivestar modules are great. Thank you to the developers working on those modules. I setup a lovely Top 10 list showing Vote Count and the Average Rating in a matter of minutes.

Thanks!
Robin

Hello All -

We are receiving an error when trying to log into our site" Notice: Undefined index: PERSISTENT_LOGIN". I have not figured out how to bypass this error and login to the site to turn the offending module off.

Below is the full error message.

Any recommendations or solutions would be appreciated. Also, we are willing to pay for someone to solve this as soon as possible.

Thanks, Joe

Notice: Undefined index: PERSISTENT_LOGIN__ in /home/theking/drupal-5.1/sites/all/modules/mysite/persistent_login/persistent_login.module on line 259

Notice: Undefined index: persistent_login_login in /home/theking/drupal-5.1/sites/all/modules/mysite/persistent_login/persistent_login.module on line 366

Warning: Cannot modify header information - headers already sent by (output started at /home/theking/drupal-5.1/sites/all/modules/mysite/persistent_login/persistent_login.module:259) in /home/theking/drupal-5.1/includes/bootstrap.inc on line 522

Warning: Cannot modify header information - headers already sent by (output started at /home/theking/drupal-5.1/sites/all/modules/mysite/persistent_login/persistent_login.module:259) in /home/theking/drupal-5.1/includes/bootstrap.inc on line 523