As far as that SB Live goes Creative will never release a Vista or Windows 7 driver for it, as they declared that card (and all other Live series cards) EOL a long time ago. best I can suggest is to try this one, SB Live! series Support Pack 1.0 (04/04/2009) - Sound Blaster - Creative Labs
If that doesn't work for you it is time to either,
1. Ditch the card and get something that will have Vista and Windows 7 support
2. Ditch the card and go with onboard if it is supported
3. Ditch Windows 7 and/or Vista and go back to XP if you want to continue using that card.
Lordbob you're not quite in the same situation as your card should continue to receive support as the X-Fi Xtreme Audio is basically the same thing. That being said if you haven't tried them yet there is a modded set for that serie4s of cards as well, SB P17X Series Support Pack 1.6 (05/14/2009) - AudigySE/Value/LS_Live24bit_X-Fi XtremeAudio_SB5.1VX - Sound Blaster - Creative Labs
bit of a PITA to install if you already have previous drivers installed, but probably worth the effort.