javascript or web coding expert needed

Greetings Introduction : I need a good thinker , good tactic , good strategy to complete a challenging project Project Requirements We need a complex javascript or method to create a text file on client machine from web browser We will provide 3 page license agreement to users , users will read answer few questions in text , radio + combo then click the "I accept agreement button" Once clicked , the script or method will create a textfile(license details) on user pc Project Notes : * we addressed know how on all the tech required , so avoid asking un wanted questions(i mean all other areas , except license) * project is in drawing board , which means developing , so we don't have full source code * you can use any method , any language , any thing inside or outside the box to access client machine from web browser * Avoid sandbox or file open dialog box , we need unique thing that has not been exist today * No confusions , everything done under license and legal way , but license file must be hidden , so we need to create license file on any folder , as per our wish Project Details * I don't want reveal full project work as its in drawing board , we are a team of 3 members working very hard * as per our client requirement , project is online based , a social network + game * we need some outside the box mechanism to accomplish our task * We know about user right and security concerns * simply saying >> online visitors arrive on our web page >> read license >> click accept agreement button >> license file is placed on c:\system32 , like that We have checked all the possibilities for the above requirement and our analysis says that it is not possible. The reason for the same is there is no way available in JavaScript to create a text file in particular user's system from the other browser except IE. Technically also it is not a good way to create a file into the user's system. It is not possible using Server side language too. No sandbox , no cookies , no file open dialog box , no other means , we need file based full freedom to use any thing ,any method , help us to finish this