Anybody know how I can create a GPS waypoint that consists of lat/long and insert it into FSX so I can use it in flight plans?

You can insert custom waypoints into your flight plan from the Flight Planner. Firstly, specify your origin and destination. Then click the Find Route button, zoom in on the map at the place where you want to insert your waypoint, and drag the red course line to that point. It's fairly simple.Good luck, and welcome to AVSIM.

For a more permanent solution you can create your own waypoints that appear in the GPS and FSX Map with a bit of XML coding. Here is an example:

<?xml version="1.0" encoding="ISO-8859-1"?><FSData version="9.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="bglcomp.xsd"> <Waypoint lat="-20.9116665646434" lon="117.11666688323" waypointType="NAMED" magvar="0" waypointRegion="YM" waypointIdent="WBK"> </Waypoint></FSData>

Copy this text into a plain text file and change the lat and lon and waypointIdent and waypointRegion to whatever you need and then run through the BGLComp.exe . Drop the resulting BGL into an active scenery folder and hey presto! New waypoint (you can include multiple waypoints if you like). Refer to the FSX SDK / Environment Kit / BGL Compiler for more info.

Im sure you can use ADE and place a gps waypoint on a gps approachhttp://www.airportdesigneditor.co.uk/