Most of the programs didn't work on WinXP as those were old softwares and you need a dll file that should work. And the problems is I forget how I did it......
That's the answer for that small problem. Skin changes using Windows Blind or similar softwares brings Nebula a tiny problem as given above as I used Window Blind and play Nebula. Nothing major problem. At least you can play the game.
He is very tiny in which people hardly see him and still not dead after every episodes. Watch out as he would be near your side in camouflage. And yes, put Venom as the next villain for upcoming Spiderman 3!!!