You can still go to Samsung website and try to find a driver for it, if your system cannot detect it.
I suggest also to look through the phone manual on how to put it in File Transfer Mode for USB connection.
my galaxy ace phone did not come with a disc and i want to upload some photos onto my laptop
Go into your apps on your phone and look for Kies air. You will need to be connected via WIFI on your phone, connected to your computer via USB, and be connected via the same WIFI on your computer. It gives you a URL to connect to and then it hooks up to your phone via a web page.