  Recent advances in string theory have highlighted the need for reliable
numerical methods to calculate correlators at strong coupling in supersymmetric
theories. We present a calculation of the correlator <0|T^{++}(r)T^{++}(0)|0>
in N=1 SYM theory in 2+1 dimensions. The numerical method we use is
supersymmetric discrete light-cone quantization (SDLCQ), which preserves the
supersymmetry at every order of the approximation and treats fermions and
bosons on the same footing. This calculation is done at large $N_c$. For small
and intermediate r the correlator converges rapidly for all couplings. At small
r the correlator behaves like 1/r^6, as expected from conformal field theory.
At large r the correlator is dominated by the BPS states of the theory. There
is, however, a critical value of the coupling where the large-r correlator goes
to zero, suggesting that the large-r correlator can only be trusted to some
finite coupling which depends on the transverse resolution. We find that this
critical coupling grows linearly with the square root of the transverse
momentum resolution.
