How do you make a screen print image into a jpeg for uploading as a photo?

I tried to put a screen print image, (a webpage) which would transfer onto my clipboard as a temporary file, into 'my photos' so that I could upload it as a jpeg onto 'my page' 'photos' and could not make it work. In Windows XP, can one access the temp file from say Adobe Photoshop, or similar? Then it would work. Any help would be appreciated.

ChloeB & Tiger's Osprey Data Site

Sat track schedule Spring 2014

LG 7 days; RW & SWT nil; LDOP varies