i need to lift my front end up and need some help on how to do this can any one help ? i just got my X last month and im in love with it

You need to tighten up the torsion bars. You can probably figure out how to do this from these pages:

http://xterra4x4.com/mods/Owners/T-bars/T-bars.html

http://www.nissanoffroad.net/how_to/torsion_bars/torsion_bars.asp

If it's an older truck, the t-bars might be worn, so either upgrading the t-bars, or at the very least "reindexing" them might be necessary. Just tightening the stock t-bars will create a harsher ride and increase wear on your steering over time