[ChaosSlayer]

you can do a random % in the way you decribed.

this is a sample of my own quest code:

	$deal=int(rand(100)+1);

		if ($deal<76)
		{
		quest::summonitem(5001);
		}

		if (($deal>75) && ($deal<88))
		{
		quest::summonitem(5002);
		}


		if (($deal>87) && ($deal<95))
		{
		quest::summonitem(5003);
		}


		if (($deal>94) && ($deal<98))
		{
		quest::summonitem(5004);
		}

		if (($deal>97) && ($deal<100))
		{
		quest::summonitem(5005);
		}


		if ($deal==100)
		{
		quest::summonitem(5006);
		}