Positioning scrollbar and rounded edges

Hi all. I am using datatables with server side scripting and bootstrap. I need to have scrolling enabled but with the scrollbar positionined "within" the table. i.e. underneath the last table column. At the moment all I'm able to get is the scrollbar working outside the table as is displayed in this link

http://live.datatables.net/fopilode/1/edit

Is this possible ?

I'm trying to acieve something like this :

http://issues.wenzhixin.net.cn/bootstrap-table/#options/basic-columns.html

Another issue I'm trying to resolve is getting the rounded edges on the table using the bootstrap css. Any bootstrap aficionados have some ideas regarding this ?

Thanks in advance people.