Just a note from Kuharsky about the cap and the rookie pool.
As for the dollars:
I wrote last week that the Colts have $7.47 million in cap room.
As you can see here, the Colts are in line to spend $4,079,726 on their draft picks in 2009. (Hit this link for everyone's rookie pool numbers.)
So they'll have $3,390,274 after signing their picks.