You mean this one?

Note it's intended for FS9 but it should work in FSX. It has no VC.
Go here & download the Base Pack.
http://www.simviation.com/hjg/aircraft/boeing/e-8.htmInstall it to FSX in the usual way. Open Sound.cfg in Notepad & change this;
[fltsim]
alias=B737_400\sound
to this;
[fltsim]
alias=B737_800\sound
Exit Notepad saving changes when prompted.
Now you need a texture. Download one of the repaints & read the instructions carefully. The above shot is the first one on the above link. The file is named e-8c_usaf_1997_92-3290.zip. Extract it & paste the folder named Texture.usaf_1997_e8c_92-3290 into your HJG Boeing E-8C v6 folder.
Finally, open Aircraft.cfg in Notepad & add the new [fltsim.xx] entry to it. As this is your first repaint it should look like this. (The added text is in Bold type)
[font=Arial][size=14]// Add your [fltsim.xx] sections here.
// Remember to start with 0 (zero).
// Copyright Historic Jetliners Group. No uploading of HJG materials to any website without prior approval.
[fltsim.0] // Change "xx" to next number in sequence starting from 0
title=Northrop Grumman/USAF E-8C-JSTAR 3290 circa 1997
sim=E-8C-JSTAR
model=
panel=
sound=
texture=usaf_1997_e8c_92-3290
kb_checklists=
description=Northrop Grumman/ USAF E-8C Joint Surveillance Target Attack Radar System (JSTARs). This aircraft is a highly modified Boing 707-320C used by the US AirForce and US Army in support of US ground forces, providing detailed ground target and tracking information deep within enemy lines. The fleet of E-8C's is solely based at Robins AFB, GA. The JSTARs platorm is operated by the 116th Air Control Wing. The Airframes were bought from different operators around the globe, and modified to E-8C standards.\nAircraft 3290 was the 2nd production aircraft. She was delivered to Qantas in 1967 as B707-338 VH-EBV (cn 19295).She was operated by Zambia Airways (9J-AEL), Trans Arabian Air Transport (ST-ALP) and also as N4115J before becomming part of the JStar fleet.
ui_manufacturer=Northrop Grumman
ui_type=E-8C JSTAR
ui_variation=92-3290 circa 1997
atc_id=923290
atc_heavy=1
atc_airline=Air Force
atc_flight_number=3290
[General]
performance=Length: