Neat and I do have some questions. First, I tried to make a nav bar from the two-button example you sent and it is not allowed. Can you confirm that XWD is not designed for this.

Second, I can't seem to get the rollover effect to work properly for my navbar. Here is what I did:
I thought I understand the layer process in your example but ... must have missed a step. Here is what I did:
1. Copied my nav bar and ungrouped it.
2. Deleted all but the button I want to work with and copied it.
3. Created a submouseOff layer and pasted the button. Created and layed out the 6 submenu buttons and linked each to an existing web page.
4. First copied the submenu nav buttons , then created a submouseOver layer and pasted in place the buttons. Edited the submenu buttons for the mouseover effect.
5 Switched to the submenuOff layer and softgrouped
6. In Website Properties>Mouseover the popup menu is disabled.

Can you see what I missed?

Thanks