Posing is no big deal but the extras like hair and material and firefly render will most likely cause havoc on your win98. Had another user upgrade to more harddrive, more memory (512meg) and xp home and left all other equipment as is... person has had no problems. Only issue they complained about was they couldnt get their tomb raider 1 to run! Moral, if you want to run win9x games, make a dual boot system. I am using P5 almost exclusively now but did cheat and make a new machine with 1gig mem and hundred's of gigabytes of harddrive dedicated to all my 3d programs (left office stuff on old computer).