Displaying data in same gridview when particular hyperlink is clicked.

Question

I have 2 Hyperlinks(SAP and OS) on one Page and a Gridview on another page. 
When HyperLink(SAP) is clicked,onto the next page a panel with 3 text boxes and SEARCH button appears. after clicking SEARCH button i want to display data of SAP table(user_id,Descriptio,sap_system_password) in Gridview.
When Hyperlink(OS) is clicked,onto the next page a panel with 2 text boxes and SEARCH button appears. after clicking SEARCH button i want to display data of OS table(user_id,Descriptio,os_system_password) in the same Gridview. 

  The Gridview has 4 columns(UserID,Description,Password,Change Password)
  SAP table contains fields as(sid,client_no,user_id,sap_system_password,description)
  OS table contains fields as(user_id,ip,host_name,os_system_password,description)

How to do this? Please help..