ok well i just had some sercive done on my crx (new transmission). and the first day it drove fine. but now it is loosing all the battery power. it starts right up when i jump it. but as soon as i turn it off and try to start it again i have nothing??? what could the problem be?? all my battery conections look good.

 

Could be a bad battery or a bad alternator or possibly both?? I would assume bad battery though if you jump it starts you turn it off and it wont start. Just take it to someplace that can test them they can test both of them while they are still in your car.
*EDIT* If you just had the tranny replaced double check the tranny ground and make sure its clean and tight.