I've been on this for Three days and now have my Celeron II 566MHz stable @ 850MHz @ 1.7volts. Took some playing with but the time pay off. 
Celeron 566MHz @ 850MHz Week 34, cBo Stepping, SL3W7
GW-FOP32 heatsink/fan - Arctic Silver Thermal Compound
FIC VB-601 system board
FIC Slot 1 to Socket 370 Adapter card
One 128Mb PC100 Dimm 2-2-2
TNT 2 32Mb Video
Diamond Sound Card
AOpen 56K ISA Modem
Acer 40X CD ROM
Two Maxtor Harddrives 8.7Gb an 4.3Gb
Full Tower Case by Macase
250watt Power Suppy
wj

Celeron 566MHz @ 850MHz Week 34, cBo Stepping, SL3W7
GW-FOP32 heatsink/fan - Arctic Silver Thermal Compound
FIC VB-601 system board
FIC Slot 1 to Socket 370 Adapter card
One 128Mb PC100 Dimm 2-2-2
TNT 2 32Mb Video
Diamond Sound Card
AOpen 56K ISA Modem
Acer 40X CD ROM
Two Maxtor Harddrives 8.7Gb an 4.3Gb
Full Tower Case by Macase
250watt Power Suppy
wj