[R] subset selection for glm

[Dhiren DSouza]

I posted a message earlier about subset selection.

I have a data set with 50 variables x1, x2, .... x50

x50 is a binary response variable that I would like to predict.  Is there a 
library I could use to do an exhaustive search for a subset 
(forward/backward subset selection) of variables to include in the 
regression model.  Any help would be greatly appreciated.

-D