WAY TOO LONG.
The dsi can get on the internet but you would have to download the application called Opera Web Browser. It is free and only take a couple minutes to download.
It depends on your connection speed. It could be between 30 seconds and 10 minutes.
I would recommend installing the newest version of Google Chrome, Mozilla Firefox, or the Opera web browser. Doing a simple Google search is enough to take you to their homepage where you can download the browser and install it.
runescape and runes of magic are two different games and well on my computer i was able to download ROM in 5 hoursish. if you did mean runescape then there is no download time its browser.
5
About 10 days
it takes 1 hour to download
well when you download it, its pretty quick.
3 sec
Not to long as soon as you download it
A really long time
a long time