Thank you very much. So far, it seems to be working well.
I ran VISIONary on my T-Mobile G2 and went immediately to SETTINGS > WIRELESS & NETWORKS, hoping to find TETHERING & PORTABLE HOTSPOT or a similarly named category under which I'd be able to turn on wifi hotspot functionality. But there's no such category there. After running VISIONary successfully on a T-Mobile g2, how would I enable wifi hotspot functionality? (I'm in the USA.) (Thanks to Paul O'Brien for developing VISIONary.)