WDTHEME root paramater and button,command field hiding

Dear Experts,

Can any one let me know how to add WDTHEME root parameter to the application URL where i'm opening TCODE and also pls let me know how to hide buttons in the specific tcode window as shown in below snapshot.

Here i'm opening SM30 transaction view of some custom tables and i want to add standard SAP theme and also want to hide BACK button and Command field.

Thanks

KH