Advice on stacking fuzzies

I'm just starting to get going with my astrophotography, and once I solve a few minor problems with my scope (see thread on TV-85 lens flare) I'd like to start stacking exposures of faint objects.

I hear that everyone uses Registax for planetary images. Is there an equivalent program for faint objects or can you use Registax for that as well?

What I'm after is the easiest, cheapest way of stacking 30sec-5min exposures.

Regards
Dave F.

David, Registax can be used for DSOs too...
There are some other programs that will do the stacking too, but Registax is probably the easiest one to use.

Now, if you need to do any post-processing, then you'll most likely need something else.