I think there's a setting under options that allows you to set your Blackberry as a USB device when you connect to the PC. This will allow you to access the folders via the "My Computer" on your PC, but I haven't tried it yet. I have noticed that issue with Roxio also; when I tried to access "videos" or "documents", those folders didn't appear anywhere except when I brought up Roxio.
I wouldn't have a issue using Roxio but that program is so fricking SLOOOOWW.
What I had to do was take out the 2g card and use a standard card reader to get my pictures. Very annoying, and I wish I could just view them when I see the "Portable Device" thing in My Computer.
Also, make sure you change "Auto Enable Mass Storage Mode When Connected" to Yes. I had mine set to No, so that might have been the reason I wasn't seeing my pictures.