Here are the important parts of the new panel.cfg for Jivko Rusev's modified HUD for Dino Cattaneo's T-45:
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// Panel Configuration file
// T-45C Goshawk
// Copyright (c) 1999-2005 Microsoft Corporation. All rights reserved.
[Window Titles]
Window00=Main panel
Window01=Radio Stack
Window02=GPS
Window03=Minipanel
Window04=HUD Switches // <--- this adds the HUD switch panel
VIEW_FORWARD_DIR=-1.000, 0.000, 0.000
//----------- This is the full screen HUD; choose your preferred zoom factor for your resolution and WideViewAspect setting (see Readme) --------------
[Window00]
Background_color=0,0,0
visible=1
ident=MAIN_PANEL
alpha_blend=0.95
window_pos= 0.000, 0.000
window_size= 1.000, 1.000
size_mm=1024
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 330, 230, 364, 712 // <--- zoom_1.5, aspect ratio 16:9 (e.g. 1280x720, 1920x1080) WideViewAspect=True
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 390, 324, 243, 475 // <--- zoom_1.0, aspect ratio 16:9 (e.g. 1280x720, 1920x1080) WideViewAspect=True
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 317, 211, 388, 760 // <--- zoom_0.9, aspect ratio 16:9 (e.g. 1280x720, 1920x1080) WideViewAspect=False
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 339, 245, 345, 675 // <--- zoom_0.8, aspect ratio 16:9 (e.g. 1280x720, 1920x1080) WideViewAspect=False
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 309, 230, 405, 712 // <--- zoom_1.5, aspect ratio 16:10 (e.g. 1680x1050, 1920x1200) WideViewAspect=True
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 377, 324, 270, 475 // <--- zoom_1.0, aspect ratio 16:10 (e.g. 1680x1050, 1920x1200) WideViewAspect=True
//gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 317, 241, 388, 684 // <--- zoom_0.9, aspect ratio 16:10 (e.g. 1680x1050, 1920x1200) WideViewAspect=False
gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 339, 271, 345, 608 // <--- zoom_0.8, aspect ratio 16:10 (e.g. 1680x1050, 1920x1200) WideViewAspect=False
//------------------ This is the HUD switch panel (Shift + 5 ) ------------------------
[Window04]
size_mm=175,438
position=6 // 0 for upper-left corner, 2 for upper-right, 6 for lower-left, 8 for lower-right
window_size=0.125,0.500
visible=0
ident=10050
gauge00=FA18_HUD_Switches!Panel Background, 0,0,175,438
gauge01=FA18_HUD_Switches!Nav1CRS, 55,342,32,32
gauge02=FA18_HUD_Switches!Nav2CRS, 55,382,32,32
gauge03=FA18_HUD_Switches!GPS CRS, 55,298,32,32
gauge04=FA18_HUD_Switches!Nav-GPS, 75,120,37,74
gauge05=FA18_HUD_Switches!HUD Clock, 45,189,90,50
gauge06=FA18_HUD_Switches!HUD Steering Switch, 68,229,37,74
gauge07=FA18_HUD_Switches!HUD Reject Switch, 35,13,28,28
gauge08=FA18_HUD_Switches!HUD Altitude Switch, 35,53,28,28
gauge09=FA18_HUD_Switches!HUD ILS Switch, 108,13,28,28
gauge10=FA18_HUD_Switches!HUD Cage Switch, 108,53,28,28
gauge11=FA18_HUD_Switches!HUD Power Switch, 78,75,37,74
//--------------------------------------------------------
[Vcockpit01]
Background_color=1,1,1
size_mm=512,512
visible=1
pixel_size=512,512
texture=$t45vc
;1 = left DDI
;2 = right DDI
;3 = center DDI
//gauge00=fa-18!MFD, 36,36,440,440, 4 NOSCANLINES <--- this is the default VC HUD!
gauge00=FA18_HUD_VC_R!FA18_HUD_VC_R, 62, 0, 415, 457 // <---this is the new HUD