Hi,
The link below from Epson indicates that there are no drivers available for download for ‘Epson Stylus CX3200 All-in-One Printer’
Refer the links below on how to install printers.
Install a printer
http://windows.microsoft.com/en-us/windows7/Install-a-printer
Install, view, and manage your devices and printers
http://windows.microsoft.com/en-us/windows7/Install-view-and-manage-your-devices-and-printers
Check if you can find the drivers in the Windows update list
http://windows.microsoft.com/en-US/windows7/Install-Windows-updates