UNIANOVA
  v8  BY endo
  /METHOD = SSTYPE(3)
  /INTERCEPT = INCLUDE
  /SAVE = PRED ZRESID
  /PRINT = HOMOGENEITY
  /CRITERIA = ALPHA(.05)
/outfile = design('c:\an.sav')
  /DESIGN = endo .

* after you run this - use merge with you data to get y variable.

* run box-cox anova.