Firends i need your help

Install the module into my site but I have not managed to work properly.

With the standard mode setting of the url looks good but still very long and very unfriendly and when I change the rewrite mode, the page does not go and get an error.

I read the help module and up the files. Htaccess folder correctly but nothing.

My server has activated the function of friendly urls but nothing!

I really need your help and patience

Thank you very much and I await your comments.

Karin