[BioC] RMA question

[Phguardiol at aol.com]

Hi,
a simple question I guess:
I have 8 CEL files from U133A
I run:
library(affy)
data<-ReadAffy()
data2<-rma(data)
data3<-exprs(data2)

then:
colnames(data3)
and it start with the name of the first sample not with the probesetID

If I run:
dim(data3) 
I get:
[1] 22283  8 

Can I add this probeset column by doing this :

tab <- data.frame(Name=geneNames(data2), data3)

in this case dim(tab) gives me [1] 22283 9 which I like more...but am I right ?
will it be the same with gcrma ?
thanks
Philippe