Hey,
sry, i just came back home else I would have answered it earlier.
It is a bit hard to answer that though because there are not quite the sounds available in english.
Wlodek is pronounced like Vlad with a softer "L" (and an "O" instead of "A"), so basically Wodek.
Dzicz is like the combination of the "G" from "genie" and "each", something like "geach".
Both are derived from polish, meaning "Water" and "Wildness".