My site was hit by several comment spams right after I installed WordPress, which forced me to look for good filters to kill those bastards. This link ( http://www.tamba2.org.uk/wordpress/spam/ ) really helps.
Here is the way to export an Erwin schema to a picture file, which I learned from my company’s DBA.
Edit/Copy, then choose picture. You can then choose Metafile or Bitmap (no GIF or JPG, but you should be able to get a bitmap to one of those formats if you wish). This will of course save it to the clipboard, you’ll need to paste it somewhere like a Word document or better yet an image editor.