This study will compare the combination of meloxicam with a drug called G-CSF (also called neupogen), to the combination of G-CSF with an agent that has no medicine (placebo). G-CSF is a substance that causes blood stem cells to change or increase in number when given to people undergoing AHSCT. The researchers would like to learn if giving meloxicam in combination with G-CSF to people before they undergo AHSCT will increase the number of stem cells available in the blood to collect and make the collection process easier.