Quik, You can get the Builder's Buddy rezzer system for free from the Scripting Forum Library. It is very easy to use and works well. Here is a short description of how to use it, from the script. The system consists of two scripts, a "base" and a "component" scripts.
///////////////////////////////////////////////////////////////////////////////
// Builders' Buddy 2.0 (Base Script)
// by Newfie Pendragon, March 2006
//
// This script is distributed with permission that it may be used in
// any way, or may be further modified/included in resale items.
// HOWEVER, if this script is used as part of a for-sale product,
// it is required that appropriate credit be given to Newfie for
// the script (or portions used in derivatives). That's a fair price
// in exchange for unlimited use of this script, dontcha think?
//
// SL Forum thread and new versions found here:
//
/54/2b/96792/1.html/////////////////////////////////////////////////////////////////////////////////
// Script Purpose & Use
//
// Functions are dependent on the "component script"
//
// QUICK USE:
// - Drop this script in the Base.
// - Drop the "Component" Script in each building part.
// - Touch your Base, and choose RECORD
// - Take all building parts into inventory
// - Drag building parts from inventory into Base Prim
// - Touch your base and choose BUILD
//
// OTHER COMMANDS from the Touch menu
// - To reposition, move/rotate Base Prim choose POSITION
// - To lock into position (removes scripts) choose DONE
// - To delete building pieces: choose CLEAN