The AMSAT ARISS page has the freqs. It looks like the crew is going to be quite busy until Feb, when they may restart their school contact schedule. That might be the time they start off schedule contacts, too. But who knows? It's worth parking a receiver on 145.8 or .825 and see what develops.
You will need tracking software (or an online plot) to tell when the ISS is in your area. A good general rule is the higher the pass the better. That wiki article also has links for those as well
I haven't seen any reports of the cross band repeater on in quite a while. Perhaps that's been discontinued - I have to ask Frank a question about that....73s Mike
The ISS crossband repeater went active around February 1, according to postings to the Hearsat mailing list. It will probably be turned back off on February 4 to accommodate a scheduled docking operation.