[snowball7]

can anyone tell me if I can transfer my music on my computer to my blackberry and if so, How?

[howie]

get a memory card, insert it into the BlackBerry, use the USB cable to mount the BB as a removable storage device, drag-n-drop music

[kelokay]

how much is the memory card?

[howie]

depends on the size of the memory card, 1gb/2gb/4gb/8gb etc
Watch amazon.com or some other electronic store that sells them to go cheap. I saw some this past weekend that were 4gb for around $10