Congratulations is spelled with a "T" and not a "D"!!

[Katie Reynolds]

Actually, "spelt" is perfectly acceptable... "spelt"* the British past tense of "to spell", whereas the American past tense of "to spell" is "spelled"

Same with "learnt" vs. "learned"

* = spelt is also defined as "a hardy wheat grown in europe for livestock feed"

EDIT:Ermm, of course, "splet" isn't really a word at all ... more like a sound (see Dave's (disturbing) note below )