[R] p values in lme4 package

[Cristina Gomes]

Dear R-users,
I was wondering if anybody knows if it's possible to obtain a p value 
for the full model of a GLMM with the lme4 package. I was told that I 
should check whether the full model including all the predictor 
variables is significant before doing stepwise regression or further 
analysis, but I can't figure out how to do this. I also wanted to know 
if there's a way of obtaining residuals or predicted values for the same 
analysis.
Thank you very much.
Cheers,
Cristina.