Foreskins aren't a big deal, but they can catch a girl off guard... not because they look goofy or because we don't like them but because most of us just aren't used to them. If you keep it clean (no dick cheese) and give the girl a chance to get used to the extra skin, you've got nothing to worry about. The other thing you will have to consider is that methods for pleasing a man with a foreskin and those for pleasing a man without are a little different. Know what you like and tell your girl. It may sound forward or pushy, but it is actually really sexy. The first time I encountered a guy with a hood, he walked me through exactly what he liked. It was like a foreskin lesson. I loved it because not only did I learn exactly what he wanted and get to please him, but I also enjoyed sort of playing with and exploring the uncharted terretory (huge turn on!).
The most important thing to remember is to love your foreskin. I know it sounds corny, but if you love it(Hell! It makes masterbation a cinch for you!) and have confidence in it then so will the girl. If you are worried and self-conscious about it the girl will be too.
So, don't sweat your hood.

If you do run into a girl that takes issue with it she is immature and shallow (or young) and not worth your time. The foreskin costs her nothing. She gets the exact same pleasure with or without it. Its just a new look to get used to.