Hello Vinnie, Neil.
I know I’m 5 weeks late on this posting but I like to share this info and if it dont work for you then no hassels. ( nothing ventured nothing gained ) I know it works on XP pro but Vista ?
The first thing to do is copy the pic you want to use, rename it to what ever and work on this one so you always have your original to go back to if it buggers up.
Right click the pic and go to the "open with" and highlight microsoft photo editor and left click.
This will open a window in photo editor with your pic on display.
Go to editors tool bar (top) and move mouse over IMAGE and left click, scroll down to RESIZE highlight this and left click
Resize window will open, move mouse to UNITS,
Left click to open and scroll to PIXELS and left click. Now move mouse to Width and set value to 800 Height should go to 600 at same time, left click the OK . Now go to top tool bar again ( still in photo editor) and left click the disc icon to save your changes. you should be done. Quit the editor and to check if all that worked hold mouse over pic and your info window should display photo size for a few seconds. On my photos coming of a Pentax optio E20 the file sizes go from around 2.27 mg to 74.2 kb this is an example only and will vary on diferent pics.
Hope this works for anyone who’s interested.
All the best Glen