New Apple iPad - Help needed.
Officially you can't, Safari doesn't support file uploading. Many sites have created Apps to let you upload to their sites, but DPR aren't there yet.
For sites that don't have an App, I used to use an alternative browser that supported uploads, I remember ICab but there were others too. However, at some point (after an OS upgrade i think) iCab stopped being able to upload. I haven't tested these with the latest OS, so I suggest you search the store to see if of the latest versions of the alternative browsers support uploads. Just be careful with the date, some are old and if they are pre iOS 5 may not support uploads even if they could when released.
How do I upload my pictures to Dpreview gallery using the iPad?
Don't have a problem using a lap top to down load to Dpreview gallery.