Plenty of Pro-Ject models, like the Essential II Phono USB or the Recordmaster range of turntables, make ripping your vinyl to computer really simple. For these models, you don't need to install USB drivers, but there are some basic setup steps to go through before you can back up your records digitally.
If your Pro-Ject turntable doesn't have a built-in USB output, you can use a phono stage with a USB output like the Phono Box USB to achieve the same result.
You can find a great guide to getting your computer ready to rip vinyl here. That'll take you through the settings for your computer, as well as some handy hints on software you can use to record, and the best way to set that up to get clear, good quality recordings.