File sharing from Mac to Windows

So I have a Windows Media Center machine (Windows 7) that has multiple internal hard drives for video and music storage - the drives are accessible from the network, and while all other Windows machines can access the contents of these drives, the Mac cannot.

I'm not network savvy at all, and I have no idea where to begin to let me access these drives.

Hi,
See the following links for File sharing from Mac to Windows. Hopefully it will be help you.

Mac OS X: Sharing your files with non-Apple computers - Apple Support

How To Easily Share Files Between Mac & Windows Computers