If by Gravity Shortbow you mean the Gravite Shortbow, it's a reward bought from the Reward trader for 40,000 Dungeoneering tokens outside of Dungeoneering. It can't be brought into the dungeons and isn't an item in the dungeons.
It depends how long you are on Runescape.
well if you played runescape 24/7 it would take probealy take 2-3 days to do .
Either purchase or download a Screen Camera. This will enable you to video your Runescape game.
There probably is a game, but not like Runescape, games like Runescape take up large space, and to fit all that onto a cartridge that small will take a lot of effort.
It is against Runescape rules to take over accounts that are yours. If your account is stolen however, you should contact Runescape in order to try and get it back instead of hacking it or some other way.
If you just started RuneScape maybe 30 minutes and if you already have a RuneScape account 7 minutes minimum.
All Runescape private servers are Illegal, if caught Jagex may take it seriously.
No, it does not matter if you are logged on to Runescape or not, it takes the same amount of time for your membership to credit.
Take a look on the world selection.
Search for it on the site, it should take you to it.
you cant.
Go to:runescpae