[IANumtin]

$item1, $item2, etc is just a way of telling the quest npc to look for x amount of items. the "="1001" after is the item it looks for.

Here's an example. It's one I wrote a while ago.

EVENT_SAY {
if ($1- =~ "Hail") { say("Hail $name . I am skilled in the arts of smithing. I would be more than willing to make you some [armor] if you wish.") }
if ($1- =~ "armor") { say("I can craft a nice [helm] [vambraces] [greaves] [breastplate] [boots] [gauntlets] or [bracer].") }
if ($1- =~ "helm") { say("I can make you a fine helm. Bring me a lambent stone and a water flask. Don't forget the Full Plate Helm Mold.") }
if ($1- =~ "vambraces") { say("I can make you a fine set of vambraces. Bring me a lambent stone and a water flask. Don't forget the Full Plate Vambrace Mold.") }
if ($1- =~ "greaves") { say("I can make you a fine set of greaves. Bring me a lambent stone and a water flask. Don't forget the Full Plate Greaves Mold.") }
if ($1- =~ "breastplate") { say("I can make you a fine Breastplate. Bring me a lambent stone and a water flask. Don't forget the Full Breastplate Mold.") }
if ($1- =~ "boots") { say("I can make you a fine pair of boots. Bring me a lambent stone and a water flask. Don't forget the Full Plate Boot Mold.") }
if ($1- =~ "gauntlets") { say("I can make you a fine set of gauntlets. Bring me a lambent stone and a water flask. Don't forget the Full Plate Gauntlet Mold.") }
if ($1- =~ "bracer") { say("I can make you a fine bracer. Bring me a lambent stone and a water flask. Don't forget the Full Plate Bracer Mold.") }
}
EVENT_ITEM {
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22047") { say("Excellent Work. Here is your Helm") summonitem("4153") }
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22051") { say("Excellent Work. Here is your Vambraces") summonitem("4155") }
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22052") { say("Excellent Work. Here is your Greaves") summonitem("4158") }
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22053") { say("Excellent Work. Here is your Breastplate") summonitem("4154") }
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22046") { say("Excellent Work. Here is your Boots") summonitem("4159") }
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22054") { say("Excellent Work. Here is your Gauntlets") summonitem("4157") }
if ($item1 == "10000" && $item2 == "13006" && $item3 == "22045") { say("Excellent Work. Here is your Bracer") summonitem("4156") }
}

Notice how the NPC asks for three things. The quest needs to know a way to identify the three things you're turning in to get such and such item in return. The $item1 and $item2, etc just tells the NPC how many items need to be turned in to hand out the reward.

EDIT: Btw, that's a ready made quest, feel free to use it if you wish. Just place it in the correct quest folder for whatever zone you want and save with an NPC id with .qst as an extension.