data report parametrized queries

hi gurus,

i am working with a VB project. i am using Datareports as reporting tool. can i use "KeepTogether" property for a set of

sections. that is i have 3 sections(Group header,Details Section and Group footer). can i keep these 3 sections togetether

without a section being split between 2 pages? These sections keep on repeting for pages. i want to keep 3 sections in a

single page on every occurance. and can i limit the number of times these 3 sections(Group header,Details Section and Group

Footer constitute one SET) occur together in a page?

and i have one more issue relating to data report. can i have 2 or more datasources for a single datareport using

parametrized queries.how to do this.

please help.
thanks in advance.