Wrong forum. You should have posted it to the AutoCAD main forum.
By the way, do this in Excel:
- select the cells you want and copyclip
- create a new tab, paste (to get the cells format)
- go back to original tab, copyclip again
- go to the new tab, paste special > paste link
- delete rows you don't need
- save and use this tab to link in AutoCAD table
- later, when you update the original tab, the copied tab will be updated automatically, so will the AutoCAD datalink table