If you just have a few p-values to adjust, it is probably easiest to simply write a DATA step to create a data set containing your p-values and then read them in PROC MULTTEST as shown in the "Inputting Raw p-Values" example in the MULTTEST documentation.
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.