[BioC] filtering on external genelist

[Oleg Moskvin]

Colleagues,

I think this should be pretty simple task but I cannot find an appropriate 
package for that.
I need to generate a subset of eSet object which contains certain probesets 
indicated in an external genelist (outside R environment).

I.e. this procedure should look like this:

mylist <- read.table .....
fltered.eset <- someFunction(eSet, mylist)

Probably this is already implemented somewhere.
Any hints will be appreciated.

All the best,

Oleg