InfoPath Dev

Hi all, please advice on this......... I put a custom button on a IP2007 form where I want to submit some form fields to custom list with same column name. submit (inbuilt) will submit to it's own IP Form library and my custom button on the form want to redirect to custom list.

Build an InfoPath form which submits to it's own library. apart from this, I want to keep a button (submit to customlist) where  some of the fileds from this InfoPath should save it to custom list as a new record. Please advice!

I have a IP2007 form having a text box control which should able to auto generated number. For example: In form library - (enable this textbox as column name) I have a form with N0001 number and when I click new form this number should to N0002 and so.... Any advices please!!! Thanks

I have a base form having 20 main fields. and when a user prompt a selection from dropdown control in form1, it should redirect to form2. and user can able to fill all the data and click submit button. then again the form1 with appear where it can able to get the totals from form2. Can any one please enlighten me how can I do it?

I have created 2 IP2007 forms and published to the server. Clients have IP2003 and found they cannot able to open any of the forms. I tried end up reading many online articles - no specific answer to solve. Could any one please advice!