Go to MSFN; you will learn how to do many things. Also, simply google
"slipstream SP3" and you will receive instructions on exactly how to do
everything you desire.
Understand, however, you must READ the instructions; not just "skim" them.
There are instructions which will enable you to recreate a bootable cd using
free MS utilities. The other thing which you must be aware of is that any
"branded" (like IBM, Lenovo, Dell, HP and excetera) are going to have
customizations which WILL be lost after slipstreaming SP3--mainly integrated
mass storage drivers and modern chipset identifications.