you can edit the .config file in .wine in your home directory and change
[Version]
; Windows version to imitate (win95,win98,winme,nt351,nt40,win2k,winxp,win2k3,win20,win30,win31)
;"Windows" = "win98" <------ from win98 to winxp
; DOS version to imitate
;"DOS" = "6.22"
hopefully that should do the trick... also have a look at
www.frankscorner.org