No, you can only craft, find or buy the dart gun in Fallout 3.
There isn't one
if you mean rex you get it when you recruit him
Broc flower cave.
Nope. Fallout 3 and Fallout: New Vegas are completely different games, sure they are in the same title and the same game engine, but the configurations and in-outs are different for both games, so you cannot simply apply a mod you used for Fallout 3 and try to run it on Fallout: New Vegas. You may be able to find mods that match your Fallout 3 mods for New Vegas on an assortment of different websites all over the net.
Fallout New Vegas is a role playing game.There are several powerful weapons available to find or to buy.The Sniper Rifle is one of the better weapons.
any bethesda game try fallout 3 fallout new Vegas i find them better
To get the VIP keycard in fallout new Vegas find the H and H tool company building then up in the office on the top floor next to the terminal there is the keycard.
you can find it on the body of most NCR veteran rangers
Scrap Metal can be sold at your nearest scrap recycling center. To find your nearest scrap yard, go to google maps, find your town/city, and search for scrap metal recycling. Bring in your scrap metal ,and they will weight it and pay you accordingly...But make sure you clean it all up before hand for a better price. For more info, check out the How To in the related links.
In Fallout 3, there was a site called "Fallout 3 Nexus", from what I understand it was where everyone went for mods. Similarly, one was made for New Vegas named "Fallout New Vegas Nexus". You'll be able to find all the mods you could ever hope for there (just google it). Be sure to download the Mod Manager, it makes mods easier to use.
Your obviously not a FNV fan or you would know your parents are not in the game...your parents are dead though!.