I strongly recommend BFGMINER for USB Block Erupters.
BFGMiner may well be just fine.
But I cannot believe it is easier nor more reliable than CGMiner. The install was the easiest miner setup I have ever done, with any mining program including Ufasoft. I am running 3 instances to three pools 2 Erupters each. Maybe since I don't have a high number of devices I'm not seeing issues others may be having??
Mapping Erupters as serial ports has to be problematic as the serial port mappings will change at Windoze' whim on a reboot which would cause major problems with multiple instances of a miner.
Win7 32 bit
CGMiner 3.3.1
2 Rosewill USB 2.0 7 port hubs.
Sam