Right I need some help with my fiction that I needed help on with Hermione earlier!

I have a few questions that I wish to have some answers and I was wondering if some of you very kind people would please help me, since I can't get onto Potterverse or the Lexicon.

Is there such a thing as Vampires in the Wizard world if yes what are they like?

Is there a curse which can change eye colour or a Transfiguration Spell?

What Year was Hermione, Harry and Ron born? I have had a total mind blank!

Thank you now for who ever helps!!