How can you sharpen the edges of a vector drawn in corel draw?

[scottyadam]

When I use corel draw and make my vector which is basically a square filled with a color and when I export it, the edges are all grainy and the graphic is so small and terrible quality it won't be good for what I want to use it for...using it on a website for formating the design.

Any suggestions because when I was back in high school it was not this difficult to figure out and everything looked a lot better.

Thanks!

Adam