Few question !

Dolphin doesn't have a 'built-in' way of putting the site offline (aka maintenance), but there is a module to do it. Not sure which one you are using, but I would suggest Deano's here:

http://www.boonex.com/m/Site_Maintenance_Mode_Mod

If you don't mind the header of the site showing, you can use Deano's mod to do it.  It lets you put in text that will be shown to visitors; they won't be able to do anything on the site.  You can set it so that admins can log in and work on things.  So with Deano's module, you could put up text, "Sorry Folks, we are not open yet but we will be soon.". or even give a date.

I will give it a try but i wish it had a mod where we can put the site logo , something like Joomla !

But thanks for your help 

My module has a script named site_maintenance.php that generates the maintenance page. If you have any php skills, that script can be modified to make the maintenance page look any way you want it to look.

For my purposes, the module works fine the way it is   However, if you need help with the above I may have time to look at it for you.

does arvixe still giving rms for daulphin users cause i can't connect at all .

Before I drop them as hosting for a test site last yerar; no users and still just too slow, they offered RMS for their customers.  If you are not a customer then no RMS.

You are right there , they are slow , i used them 4 years ago and back again to there cause i had no idea what's the best host to use , so i have signed for six month with them and i may move as long as i know what the best host to go to and as long as they provide rms if not is there another way to get it separable ?

Thanks.