You
could consider the the self-publishing route. However, it's full of pitfalls and potholes and you really need to do some homework if you're not to get ripped off.
Many publishers/agents will not consider something that's been self-published - they form the impression that if you've had to resort to that, then your book is rubbish.
There's a fine line between 'vanity' publishing and private- or self-publishing (and whatever other names people give it). Generally, if you are approached by a publisher who tells you your book is very good and could sell loads of copies and make you famous; if they say they would like to publish your book - but you have to pay them, then they're usually playing on your own vanity in order to make some sales.
There are companies who will publish your book if you pay them to - Lulu, Trafford and Authorhouse are just three - and will offer services such as editing, typesetting and marketing at extra cost. They don't pretend to make you into a best-selling author. But the bottom line is that if you want to sell lots of copies then you're going to have to put in a lot of work, and you may not even make a profit. However, this route can work if you're selling to a smaller market, say a community group, school or the staff of a private company.
You could also try looking out for the numerous writers' web forums. My favourite is Writers Dock -
http://www.writersdock.co.uk/ They have over 3000 members, amateur and professional, and it's well worth a look.