This little bit of editing of your most recently used save game file will give you 999 health and magic, and all 3 skills to 20 or greater.
NOTE: Step 1 starts you in the Lands of Lore directore in DOS.

1 - dir /o *.dat

2 - debug_saveXXX.dat (Replace XXX with the last file listed from step 1).

3 - at the "-" prompt type the following
e 17A E7 03 E7 03 E7 03 E7 03
e 1FC E7 03 E7 03 E7 03 E7 03
e 27E E7 03 E7 03 E7 03 E7 03
e 1A7 14 14 14
e 229 14 14 14
e 2AB 14 14 14
w
q