If you are going to output the lines anyway, you could run the output through the sort command. Not elegant, but it does not require much work:
cscript.exe //nologo YOUR-SCRIPT | Sort
Note //nologo omits the logo lines (Microsoft (R) Windows Script Host Version... blah blah blah) from appearing in the middle of your sorted output. (I guess MS does not know what stderr is for.)
See http://ss64.com/nt/sort.html for details on sort.
/+n is the most useful option if your sort key does not start in the first column.
Compares are always case-insensitive, which is lame.