i have completed the cure for vampirism potion but now i want to become a vampire again, catching porophylic hymopholia does nothing.

could someone make a potion that bypases the stupid vampirism resistance you get after drinking the cure for vampirism potion?

it will be possible with a script I think

I haven't used the following mods personally, but they might be what you are looking for. Make sure to read the the descriptions/readme's carefully, and maybe read the user comments as well.
Turn a Vampire Potion
Vampire Cure Changes
Vampire Headstones
From the UESP wiki: Becoming a Vampire Again (After Being Cured)

+1 for Alaisiagae's advice. I havn't think about that!

wow, thz alot!