Although the question is quite old, I believe that this answer might help others with the same or a similar problem.
Using "integrated" LaTeX for typesetting
As @KingOliver already mentioned, using LaTeX is a good way for typesetting mathematical formula and equations. A better solution, than dowloading GIFs without any option to change the equations after inserting, might be to "integrate" LaTeX using VBA.
Jan Bender has done some work in VBA and is offering his CorelDRAW "add-in" for free.
The add-in will allow you to insert objects, typeset by LaTeX, into your CorelDRAW file as a group of curve objects. These curves can be formatted like any other in CorelDRAW. And last but not least, it is possible to change the formula after inserting, since its LaTeX-code is stored as object data variable.
Download
Get the VBA files by Jan Bender from impulse-based.de
Requirements
- CorelDRAW running on a 32bit or 64bit host
- Some basic knowledge of LaTeX math-mode
latex.exeanddvips.exeto be in the windowspath-variable (Installing any LaTeX-Distribution, for example MikTeX or TeX Live, should put them there)
Installation and Troubleshooting
Instruction on how to install it, combined with some troubleshooting, can be found here.