Hi CB,
Since your "correction" touch only a few menu items, the best way is to do inline styling on the menu block item. Then on item you want to modify add simply this bit of code:
style="height: 45px;padding-top:10px"
With that, you play with 2 parameters :
height = height of "menu item highiting' to stretch it a bit.
padding-top = to modify the space between upper menu bar and your the item text.
Then applied to your trend menu item, your line should look like this:
<a href="trends.htm" class="but but_t" title="Recent trends" style="height: 45px;padding-top:10px">Cumulus<br />Trends</a>
Hope this help,
Jacques