Law / Is it possible to change or extant my visa? [2]

there is possibility, but u need to find someone who will give u work and than u r tryin to get wor permit and temporary residence card. but to get that card u need to put your folder not less than 45 days before your visa will expired.

And of cours it depends from what kind of visa u have now.

Life / Married to Polish wife, moving to poland + residency permit [9]

If you r married it shouldn't be a problem, just formalities. Probably u will have to get any visa. And just when u will come to Poland u will need to put your folder in the right office to ask for temporary resident card. They will ask probably for act of your marriage so your wife will have to go to another office to register your marriage (i'm not sure about this procedure), they will ask probably for some other documents. I don't know how about people who get married out of Poland, but couples who get married here are also invited for interview to the office, they r chackin if marriage is not becouse of getting polish documents by foreigners.

Good luck :)