2) I think it can through a program called LOMUT. They are stored in imp.mpq. You can already try to find LOMUT through a search and run it. I, however, have not been able to run it. There used to be a topic in the forum with some of the graphics of the game already extracted and uploaded by somebody, but the link is dead. Maybe the forum's administrator, Boaster, will have some time to help you. I will also try to read again the old topics later this evening to see if I can find something to help you more.
I've already found the artists list on MobyGames, yes, but googling these names gave me nothing about the cover art. So I thought there may be some fans of the game here who knows everything about it , including artwork credits.