This is the set of drivers I found. I imagine it should work for your monitor.
Copy this into an INF file:
[Version]
signature="$CHICAGO$"
Class=Monitor
Provider=%Mfg%
[Manufacturer]
%Mfg%=Relisys
[RELISYS]
%REL1438%=RE1438, Monitor\REL1438
%REL1450%=RE1450, Monitor\REL1450
%REL9516%=RE9516S, Monitor\REL9516
;---------------------------------------------------------------------
[RE1438]
DelReg=DEL_CURRENT_REG
AddReg=RE1438.AddReg, 1024, DPMS
[RE1438.AddReg]
HKR,"MODES\1024,768",Mode1,,"30-38,0-100,+,+"
HKR,,ICMProfile,1,9
;---------------------------------------------------------------------
[RE1450]
DelReg=DEL_CURRENT_REG
AddReg=RE1450.AddReg, 1024, DPMS
[RE1450.AddReg]
HKR,"MODES\1024,768",Mode1,,"30-50,50-100,+,+"
HKR,,ICMProfile,1,9
;---------------------------------------------------------------------
[RE9516S]
DelReg=DEL_CURRENT_REG
AddReg=RE9516.AddReg, 1024, DPMS
[RE9516.AddReg]
HKR,"MODES\800,600",Mode1,,"30-35,0-100,+,+"
HKR,,ICMProfile,1,9
[640]
HKR,,MaxResolution,,"640,480"
[800]
HKR,,MaxResolution,,"800,600"
[1024]
HKR,,MaxResolution,,"1024,768"
[1280]
HKR,,MaxResolution,,"1280,1024"
[1600]
HKR,,MaxResolution,,"1600,1200"
[DPMS]
HKR,,DPMS,,0
[DEL_CURRENT_REG]
HKR,MODES
HKR,,MaxResolution
HKR,,DPMS
HKR,,ICMProfile
[Strings]
MonitorClassName="Mointor"
Mfg="Relisys"
REL1438="Relisys RE1438"
REL1450="Relisys RE1450"
REL9516="Relisys RE9516S"