Hi James,
I have just installed Vista RC1 and tried to print a photo and got the same
message as you i have been trying alsorts and in a test i have fixed this
problem, all you need is to do is the following;
1; put the Epson R300 install cd in drive
2; open Control Panel
3; open Printers
4; open Epson R300 Properties
5; goto the Advanced Tab
6; click on New Driver
7; click next then Have Disk...
8; click Browse
9; change the look in to your cd rom and follow these folders
open English, open WINXP_2K, Then open file E_DF18FE, then choose R300 next
then finish,
mine took a little while to install the driver but once done i re opened the
photo and it printed without any problems,

) i hope this works for you too
Shaun
"James" wrote:
> When using applications such as word and other office applications I can
> print with my photo printer, but when trying to print a photo using Windows
> Photo gallery I get an error message:
>
> 'Windows Can't find a print provider for this printer. You may need to
> re-install the printer, and then try again.'
>
> I would really like to print pictures in vista as I currently do not have XP
> installed.
>