Browsing photos

Hi,

 I have just purchased a WD TV Live. I am running the latest firmware 1.04.31.

 I have some very basic questions concerning photos. I am browsing the photos at the moment over a network share (from a computer running XP).

a] if I select a photo from the thumbnails, it takes about 3 seconds for the photo to display (each about 1.5MB in size). If I then move through the photos with the forward / back button, again it takes about 3 seconds for each photo to display. Is that normal?

b] in some of my folders I have several hundred photos. Is there a quicker way of getting to the last few hundred than just repeatedly pressing the NEXT button?

 Any tips would be most welcome.

 all best,

 M