  I present a full leading-order calculation of F_2(x,Q^2) and F_L(x,Q^2),
including contributions not only from leading order in \alpha_s, but also from
the leading power of \alpha_s for each order in ln(1/x). The calculation is
ordered according to the inputs and evolution of the structure functions, and
the perturbative form of the inputs is determined. I compare the results of
fits to data to those using conventional LO and NLO order calculations, and the
correct inclusion of leading ln(1/x) terms is clearly preferred. A prediction
for F_L(x,Q^2) is produced which is smaller at small x than that obtained from
the conventional approach.
