The high temperature phase of the electroweak standard theory is descr
ibed by a strongly coupled SU(2)-Higgs-model in three dimensions. As i
n the Abbott-Farhi-model Higgs and W-boson are low lying bound states.
Using a method by Simonov based on the Feynman-Schwinger representati
on of correlators we calculate the masses of these states. Our results
are compared with lattice masses.