Hi,
I think, he was assuming 1.2v instead of 1.5v, as there are many batteries rated at 1.2v especially rechargeable ones.
---------- Post added at 07:47 ---------- Previous post was at 07:45 ----------
What you need to do, is step down 220v/110v to 4.5v. This can be done very easily. Step down the voltage using a transformer. 220-6v. Rectify the output, you'll get around 9v. Add an LM317 circuit and you have 3.6v. If you could find a 3v transformer, then you can just rectify the AC and run it without regulator like LM317, but 3v isn't very common.
Another alternative, is use wall-warts that come with adjustable output, so that you can adjust the output. These are dirt-cheap and will do the job.