BTW, should there not be 3 columns there if the theme has 2 sidebars?
I don't think so. A three column theme implies one column for content, and two for sidebars as a general rule.
Pages, Calendar, Recent Posts, Tag Cloud, Text and Recent Comments.
These are defaults that come with WordPress if memory serves me. I would start again by selecting column 1, placing the widgets you want there, save, select column 2 and repeat. But, first... you are also using an old version (1.1) of Chris Pearson's Cutline 3-Column Right. Go here and get an updated version (that is, if you want to, of course). See how it progresses from there. Again, that amazon plugin states it was only tested to WP version 2.3.2, so it may not work.
Might want to check on known plugin compatibilities with WP 2.5.1. You can search that (plugin compatibility), easily enough.
wp-chicklets... the authors site says it was written for wordpress 2.2.
(same compatibility issue may apply)
currex is supposed to be 2.5.1 compatible. Did you activate the plugin by selecting it in the plugin menu in your dashboard before looking for it in -Dashboard > Design > widgets, then go and put the widget in one of the sidebars?
Best of luck.