flying with Jet Airways Elal and Brussels air from JFK TLV JFK miles? program?

[jfktlv]

thanks in advance ..new to this...
What program is best to transfer the miles to?
Do I need to do each airline separately?
(elal? jet? Brus?)
On another note will anyone be on the same flight and touring BRUSSELs for the day?

    Tue, 07 Feb, 2012   New York 18:00   Brussels 07:50   7h 50m
Operated by Jet Airways -

Wed, 08 Feb, 2012   Brussels 19:00   Tel Aviv Tlv 00:25   4h 25m
Operated by LY - Arrival: Terminal 3 International
 
Brussels Airlines
Tue, 21 Feb, 2012   Tel Aviv Tlv 01:20   Brussels 05:10   4h 50m/0 stops   Economy - E
Operated by Brussels Airlines
 9W226   Tue, 21 Feb, 2012   Brussels 10:15   New York 12:40   8h 25m/0 stops   Economy - O

[jfktlv]

BTW for those who want to know I paid $893 with a TA