We will be going to the new Transponder model for 2010 Season.  http://www.mxtransponder.com/ info.
If you are going to any of these events:

You will need to purchase or rent the new
trackside transponder.  If you plan to race WSP
in 2010, we suggest you purchase the new transponder
model this year so you do not have to rent it then buy it later.

If you are NOT attending these events, you are ok to use
the boot transponder at WSP this year and get the new
one over the fall/winter/spring after this season ends.

We are hoping to have enough boot transponders for this year's
NERC.  We will update info on this as soon as we can.