[MysticCat]

Tow (like cow or dow) and Taw (like "all") are both considered acceptable English pronunciations, although the few dictionaries I looked at all gave "Tow" as the preferred (and sometimes only) pronunciation.

In Modern Greek, it's more like "Tahf." (I'm really not making this up, I promise.)

Again, for purposes of Alpha Sigam Tau, I'll defer to your preference.