There definitely can be a genetic componenet to pre-e, both maternal and paternal.
Sons of preeclamptic pregnancies are more likely to father pre-e pregnancies than the general population. If your mother or sister had pre-eclampsia that is considered an even stronger risk factor.
In my case, no maternal history of pre-eclampsia in my family. However, my paternal grandmother had pre-e with my dad. Plus my mother-in-law had pre-e with both her pregnancies, including my husband and his sister. His sister only devleoped pre-e only during her second pregnancy- with a different partner who also had a family history of preeclampsia.
However, even if you have a history of pre-e that doesn't mean you will get it again. Pre-e is much more common in first pregnancies, and if pre-e does strike again in subsequent pregnancies it tends to strike later or less severely. One theory is because subsequent pregnancies are able to implant better by taking advantage of prior uterine spiral artery remodeling accomplished by the first pregnancy/placenta.
Here is a link talking about general re-occurence rates: http://www.preeclampsia.org/forum/viewt ... f=19&t=331
If you would like to get a better idea of your individual risks, you could always schedule a pre-conception appointment with a MFM specializing in high risk pregnancies. They should be able to test for any possible underlying disorders and give you a better breakdown of your odds based on your individual medical history. http://www.smfm.org/