Epson LX-300+II Reference Manual page 63

2. Insert the CD-ROM. When you see the EPSON Installation
Program screen, click Cancel. Then type the appropriate
drive and folder names in which the printer driver for clients
is located, and click OK.
When installing drivers in Windows Vista, XP, or, 2000
"Digital Signature is not found" may appear. Click Yes (for
Windows 2000) or Continue Anyway (for Windows XP), or
Install this driver software anyway (for Windows Vista),
and continue installing.
63
Using the Printer Software