Hi Mr. Abantecart, nice to meet you 
No, i don't have any custom .htaccess rewrite rule in my site.
And... i made it work just a few minutes ago.
When I clicked the links i saw an "ugly" page, and when i wrote the destination page address in the address bar i saw it fine.
So I realized that the problem was the link. What I did was to delete the LINK data at Design==>Menu - Edit Menu, save it, and then rewrite the link data and save it again. And.. that was enough 
I must say that there was no error in the data showed in the link entrance before i delete-rewrite it, but it's now working perfect.
Could it be a bug?
Only the time will say it... or you have any idea? 
Thank you so much to all of you.

Hi, it's me again 
I'd like to know if there is a way to use in the web store a discount we're currently offering in the real store.
The situation: A client buy 2 products.
The discount: The cheaper one gets a 50% discount.

Can we achieve this?

Well.. i had already found this problem, but had found also a walkaround...
The thing was that the totals had diferente cost in one place and in another..., after asking here in th forum, i decided to disable the shipping cost, and changed the taxes type from % to $, and used that tax as a shipping cost.
Well.. after all this, now I need to be able to have items with free shipping ,but as i said, i was using a tax as shipping cost... so..., i had to turn shipping on again, and had to use the taxes in its primary function... but I still have the problem!
I know my English is no too good... so i'm sending you two images, it sais more than 1000 words...
Hope you could find the problem.
Greetings!!

Hi, abolado.
Option 1: view the file by direct url.
You mean the style.css, right? Well, when i write the url just like i see it at Filezilla for example, a can see de file; but when I try to view it by inspecting the code (view source code in the context menu) and clicking the link: <link href="storefront/view/default_html5/stylesheet/style.css"> i don't see the css, i see the html without any format. It's very strange that i click the css link and i get the html... isn't it?
Well..looking a little bit deeper, the difference between both views (at the address bar) follow like this:

When I see the file with no trouble: /storefront/view/default_html5/stylesheet/style.css
When I click the link in the html: /index.php/storefront/view/default_html5/stylesheet/style.css

I don't know if it has something to do with the problem... but it's the only thing I see..
Option 2: chek permissions.

Well...  I checked it and its  644 for the css file... i think it's ok, any way i changed it to 764 just to see what happens... and... nothing happens...

The page was up and running, and from one day to the other... i found it with no style at all...
Thank you very much for your time... hope you could help me..

Can i back up the database just in case...? I would really hate to add al items and options... and promotions.. and user... again..

Yep, that's right, no matter where i send the products, the taxes are always the same (22%..yeah... hard to believe  )
And now I realized that  I was watching the tree insted of the woods (not sure if it's said like this  ), 'cause actually don't need to use different taxes... I just saw the tool... and wanted to use it... my mistake!
I guess i was thinking of electronic invoices... but not really necesary for now.
Thank you all for your time... and if you want to see the web i'm working on... forever-21.com.uy
Still have some details... but I think it's gonna be, at least, functional.
See you around

David, thank you so much for your answer!
Precisely,it solved the issue... but... (there's always a but) is there a way to show the final price, without having that problem?
Or should I specify that the prices don't include taxes?
And thank you very much!(again)