Patch a module with Eclipse

I tried patching a module on my computer with Eclipse. I followed instructions as on this page, http://drupal.org/node/60179, namely

"To apply patches to code using Eclipse:

1. Menu > windows > open perspective > others > team synchronizing
2. Open the patch file, select all text and copy it to clipboard (Ctrl+ C)
3. Menu > project > apply patch
4. Select clipboard, click next, select the file you want to patch, click finish or next to setup patching options."

The problem I had was that at step 4, I did not see any file to select to patch: no files and no file browse buttons.

Please how do i 'select the file you want to patch'.

Thanks.