You will need the Symbol TrueType font installed on your computer (most Windows installations will have it). Use the guide below to select the Greek letters:
A, a (Alpha) = A
B, b (Beta) = B
G, g (Gamma) = G
D, d (Delta) = D
E, e (Epsilon) = E
Z, z (Zeta) = Z
H, h (Eta) = H
Q, q (Theta) = Q
I, i (Iota) = I
K, k (Kappa) = K
L, l (Lambda) = L
M, m (Mu) = M
N, n (Nu) = N
X, x (Xi) = X
O, o (Omicron) = O
P, p (Pi) = P
R, r (Rho) = R
S, s (Sigma) = S
T, t (Tau) = T
U, u (Upsilon) = U
F, f (Phi) = F
C, c (Chi) = C
Y, y (Psi) = Y
W, w (Omega) = W
V (Sigma – used only at the end of a word) = V
You'll need to put your code in UBB Code like so (omit the space between the brackets):
[ font=symbol ]ABGDEZHQIKLMNXOPRSTUFCYW[ /font ]
This should appear like this:
ABGDEZHQIKLMNXOPRSTUFCYW
Hope this helps.
P.S. Dammit, John, we need this as a FAQ topic!!!!

This has been 'Murrayed' several times on GC.