Subform Formating Help

I have a database with many subforms formated as "single forms". I am
having trouble formating the forms so they display propers (fill the
box on the main form, don't have scroll bars, don't have different
color bars around them, etc.) I want the subforms to look like they
are part of the main form. Any ideas or websites you could send me to
would be appreciated. Thanks in advance.