800 DPI???  Whooooooh, that is way too high a 
resolution.  Not only will it make the images too 
large for your page, but most online webspace 
hosts will not allow images that big...or they 
will, but only a few.  I scan all my cels in at 
72 dpi, and it's usually very good, and they are 
nice and easy to load too :)  Umm, that might 
have something to do with your images being 
discolored, but I dont know really.  It also may 
be the format you save in too.  Do you save them 
as jpg's or gifs?  Jpg's are better for stuff 
that you want to look good, while gifs are 
restrained to web safe colors, which are not a 
lot.  So, it will cause banding and stuff.  Hope 
you get it all worked, I just dealt with my own 
page demons awhile back as well, sheeesh, it's 
wierd.