I dont have a lot of knowledge regarding barcodes, but I'll throw out an idea here. Why dont you just go to an office supply store and buy some labels that suit your needs. I believe you can then get a barcode font for your computer. You should be able to print the barcodes on the labels from your computer's printer.
What are you going to use to read the barcodes once you have them printed? Are you doing this for personal inventory purposes?