I need to get an SD card for my XSI. I was looking at the SDHC cards but someone told me that my Gateway T-1616 5-1 reader will not read the SDHC cards, only the SD cards. They said something like it would harm the card to do that?
I don't want to hinder the performance of my camera by getting an inferior card. Should I purchase an SDHC card and a reader to read it, or can I do just as good by connecting the camera to the computer via usb? Right now I am connecting my 300D to my computer via usb and it takes forever to download images. I don't want that.

