I've bought some COMM coins from poloniex and withdrew them to my wallet. How do I generate PoS block?
After one day of no outgoing transactions!
I usually receive some coins everyday!

no need to setup and run a batch file?
No, just leave your wallet connected to the internet if it's not encrypted. If it is encrypted you have to also press the unlock button. How long it takes is a bit erratic, sometimes it might take minutes and in the worst case you might have to wait 12 hours because it has to compete with all other wallets to find a block.