These are the steps I took to install my 430 on my Windows 7 64Bit machine:
1. Download the XP 64Bit drivers
2. Unzip them but take a note as to where they are unzipped.
3. Click Start>Devices and Printers
4. Click Add a printer (at the top of the Devices and Printers window)
5. Click Add a local printer and click Next
6. Click the Have Disk... button.
7. Click Browse... button and navigate to where your extracted XP 64bit drivers are (see step 2)
8. Dobule-click the inf file (mine does not have an extension of inf in this window but is called DSGJ400).
9. Follow any prompts and that did it for me. Make sur eyour port is correct (ie: if you have an onboard parallel port, use LPT1, ect).
From here, I followed normal sharing proceedures. Now I can print through this machine with any other machine on the network. It's flawless.