InfoPath Dev

I would like to create info path for submiting and receiving data to and from access database. I tried to create infopath doc with which contains all data from DB and ID. When I entered ID, DB should retreive data if record with requested ID exists or to enable entering new ID, but DB always return me the first record from DB.  Can someone ...

I would like to created InfoPath with several memo fields but I can not created them in access database becouse there is some limitation between Infopath document and access DB.  Can I do it by writing some code? 

Thanks a lot for explanation. is there any other option considering I have not installed Visual Studio. Is there any option to create macro?

I would like to automate exorting InfoPath data to word document so users of Infopath tempalte should not spend time on exporting data to web and then to open InfoPath template in Word. Is it possible to crete option within InfoPath document for generating Word document with info from InfoPath?   Thanks in advance :)