Google do a very nice free program called Picasa . Its hidden under the More then Even More tabs on the home page . It is great for finding and organising photos on your PCs . It also has very easy to use if a little basic edit facilities . I also use it to resize photos for Ebay etc .
I always shoot at highest quality which gives me approx 130 shots on a 1Gig card . I used to use a Leica R3 a lot but I noe prefer digital and I get better results easier BUT DSLRs are different to film SLRS and some homeworks pays .