extension agent problem need help!!

[Meena Palvannan]

Hi,
We have a table which has some sparse entry on some columns

for example

index     Column1

  1        data1

  2          *

  3         data3

  4         data4


When we try to walk or get next

it sees the empty column and assumes that is the end of the mib
and comes out with end of mib message
Can you tell me how do we change the agent, so that it skips that empty rows
and goes down to get me row 3 and etc

Thanks
Meena