My name is stuart porter,i

Question

My name is stuart porter,i have a psp model 2001xmd i bought last month.At x-mas i got a sony media manager version2.5 which i upgraded to version 3.0.
Now here is my problem,i can't download anything off my computer which is a dell-windows xps professional that has no memory or media card slots on the back.
Do i need a media card reader?