How do you deploy an edit/add custom form to Sharepoint 2010 without modifying views or data on target server?

Question

I have a custom content type and list on a SharePoint 2010 server. The edit/add forms are custom, built in SharePoint Designer. I want to modify the layout of the forms including a new field, but the target server does not and will not have SharePoint Designer. In addition, current list data and views already exists on the target server. Is there a way to customize these forms on the target server without destroying the current data and all the views the user already added?

Thanks in advance for your help

Answer 1

I've decided to take a different approach, since the user of the application will never have SharePoint Designer, I have decided to create a custom solution in Visual Studio using an application page and a combination of server sire SP Object Model and SPServices. If anyone is interested in more details, let me know. Still in the middle of developing/modifying, but it is working, gives me more flexability in future deployments.