Let me know if this is what you're looking for:
On your desired slide go to:
View > Toolbars > Control Toolbox
Click on More Controls (lower right hand corner of Toolbox dialog box)
Scroll to find Microsoft Office Spreadsheet 11.0
Your cursor will change into a crosshair or plus sign
Click and drag a box shape on your slide -- a blank spreadsheet will appear
in the area.
Go to your original Excel spreadsheet. Select the area you want in the
PowerPoint and Copy.
Return to your PowerPoint slide.
Right click on the *spreadsheet* you just created with Control Toolbox
Select Microsoft Office Spreadsheet 11.0 > Edit
Paste the Excel Spreadsheet
Exit the Control Box (click outside of the Control Box)
View in Slide Show View. If the spreadsheet you pasted into the Control Box
is larger in area than the box you drew, the scroll bars will appear,
allowing you to scroll within the spread sheet.
Hope this helps. This was taught to me by Brian Reilly.
Sandy