Hello All,
Sometimes if making a full switch to GNU/Linux is difficult, there are Libre alternatives to commercial closed softwares available for the windows platform too.
For Photoshop, there is the Gimp alternative. http://www.gimp.org/ Its ready packages are available at http://gimp-win.sourceforge.net/stable.html
Download all the packages on this page. Install the GTK for your OS version. Then install Gimp. Then its help package (Select only English during installation). Then the animation package if required.
For Corel Draw, there is the Inkscape alternative. http://www.inkscape.org/ The exe file is available at http://inkscape.modevia.com/win32/?M=D http://inkscape.modevia.com/win32/Inkscape-0.45-1.win32.exe