menu block

My problem is I have two vocabularies for each node: topic and tag.
Topic is predefined but tags must be freely written by the user.

I would like to have a menu block that lists the topics and under each topic the tags related to the topic.

So if I have BlogEntry 1 which has topic_a, tag_a and tag_b, BlogEntry 2 that has topic_a, tag_b and tag_c and BlogEntry 3 that has topic_b, tag_a and tag_c, my menu block should look like below:

topic_a (goes to listing of posts under topic_a)
-tag_a (goes to listing of posts under topic_a and has tag_a)
-tag_b
-tag_c

topic_b
-tag_a

Hi,

I've just switched from a previous version of the Omega theme to the recent one with the zones and regions and am struggling a bit.

I've got a main menu with sublinks (depth of 2) and want to display the top level of the navigation at the top of the page and the sub-links of the active trail only in the sidebar. (See attached mockup)

Could you please tell me how I can accomplish this? So far, I've set the Main Menu as source for the Secondary Links, but that's about it.

Thanks,
Tina