I thought you were looking for a site to purchase books for your Nokia. Sorry.
Wait a sec, did you already buy the book? Does Amazon let folks buy ebooks without a Kindle to download to? I'm sure that if you email Amazon, they will refund your money if you explain that you are unable to use the book.
I just did a quick Google search and read about your Nokia. It has wifi connectivity, right? Like I said earlier, go to
http://www.mobipocket.com/en/downloa...ailsreader.asp and download the software. Then try to download a free MOBI book from here and play with it until it works. If it never seems to work for you, then download eReader software. Something will have to work for you sooner or later.
I'm gonna repeat it: Amazon is not where you get ebooks, UNLESS you own a Kindle.
Good Luck!