Not sure how handy this will be to people, but it may help you add WLM 9.0 Beta 1 support to your skin if you're only replacing images, and you might not even need to install WLM 9.0 Beta to get it working.
I created this to help me get a 8.5 + 9.0 shared resgroup going on.
Hope this helps someone somehow
' ' = PNG (blank space)
R = Encrypted RLE
M = Multiple Image
V = Vista Res
6 = 4006 Group
v6 = 4006 + Vista 4006
IMG 9.0 8.5
91
160 R R
177
268 R
286 R
287 R
326 R
329 R6 6
333
334
335 R
336 R
362 R
364 R
372 R R
379
380
381 R R
395 R
410 R6 6
411 R6 6
412 R6 6
414 R6 6
421 R6 6
422 R6 6
423 R6 6
424 R6 6
425 R6 6
426 R6 6
427 R6 6
440 R6 6
441 R6 6
442 R6 6
443 R6 6
444 R6 6
452 R
453 R
454 R
455 R
457 R
458 R
459 R
470 R
530 R
537
548 R R
569 R
580
595
633 R
634 R
636
637
640
652
653 R M
654 R M
655 R R
656 R
657 R
658 R
659 R
660 R
661 R
662 R
663 R
668
700
701
702
703
704
961 R
962 R
963 R
975
978 RV V
979 R
980 R
981 R
984 R M
986 R M
988 R M
992 R6 6
1014 R
1015
1017 R6 6
1018 R6 6
1019 RV6 V6
1023 R6 6
1026 R
1027 R
1028 R
1029 R
1030 R
1031 R6 6
1032 RV6 V6
1033 RV6 V6
1034 R6 6
1035 R6 6
1036 R
1112 R M
1114 R
1131 R
1132 R
1133 R
1134 R
1135 R
1373 R
1382 R M
1383 R M
1386 R
1441 R6 6
1442 R6 6
1443 R6 6
1444 RV6 V6
1445 R6 6
1446 R6 6
1447 R6 6
1448 R6 6
1449 R6 6
1450 R M
1451 R M
1452 R
1453 R
1454 R
1455 R
1457
1472
1480 R6 6
1481 R
1482 R
1484 R
1487 R6 6
1488 R
1489 R
1524
1525
1526
1531
1533 R
1534 R
1537
1602
1651 R R
1652
1653
1654
1655
20031 R
20032 R
20033 R
20034 R
20035 R
20036 R
20037 R
20038 R
20039 R
20040 R
20041 R
20042 R
There may be a few missing, but what'cha gonna do?
Edit:
Felt like making it into an Excel File wlm8.5 and 9.0 have swapped sides in this file btw everything should be the same, haven't double checked
/ 
Attachment: 
