I just use the Sfall loader (version 3.3.7)which you can find here:
http://sourceforge.net/projects/sfall/ or here:
http://sfall.sourceforge.net/
Don't know if it works with the highres patched steam version since the executable probably differs.
About this project:
This is the sfall project ("sfall")
This project was registered on SourceForge.net on Dec 8, 2009, and is described by the project team as follows:
A set of engine modifications for the classic game Fallout 2 by Interplay. Includes fixes for bugs in the original engine, allows fallout to run correctly on modern operating systems, and adds additional features for modders.
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** Changelog **
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v3.3
>A new ammo patch (From JimTheDinosaur)
>Added new script functions gdialog_get_barter_mod, tile_under_cursor, set_inven_ap_cost
>Added an option to restrict inventory weight limit to active items only
>Added an option to modify inventory ap cost
>Fixes to Glovz ammo patch (From Glovz)
>Fixed melee/unarmed losing their str depedance when using a skills ini file
>Fixed the set_perk_freq function, which I seem to have broken at some point
>Fixed the broken third return value for the afterhitroll script
v3.2
>The build environment is now visual studio 2012. The required d3dx9 version is increased, and
win xp sp2 and win 2000 are no longer supported.
>Fixed potential corruption of pc's age, gender, or current hp/poison/rads when using perks.ini
>Readded npc combat control
>Changed the way mode 1 global scripts work, to fix compatibility with the latest res patch
>Fixes to glovz ammo patch
v3.1
>Fixed folding of constant float expressions in sfall script editors optimizer
>Fixed the active_hand and set_pickpocket_max script functions
>Added a fix for a crash when killing critters with explosives
v3.0
>Added get/set_critter_skill_points, get/set_available_skill_points, mod_skill_points_per_level,
set_perk_freq, get_last_attacker, get_last_target and block_combat script functions
>Added a fix for the super stimpack exploit
>Added config options to control skill costs
>Fixed in_world_map script function potentially returning an incorrect value
>Fixed force_aimed_shots and disable_aimed_shots corrupting behaviour of other weapons
>Fixed potential problem with the modified_ini script function
>Fixed the missing last argument of the ap cost hook script
>Fixed apperence of version info in windows (From NovaRain)
>When using dx9 graphics, gpu blt is enabled automatically if supported
>When using dx9 graphics, resolution is changed automatically when using the res patch
>Removed upscaling filter support
>Removed ddraw.ini defined global shader
>Removed multiplayer
>Removed the update check
v2.20a
>Fixes for sfall bugs in critical hits against horrigan and the player
>Update check is now disabled by default
v2.19a
>Added options to move the main menu buttons and credit text
>Fixed a bug in the default heal rate formula when modifying stat relationships
As you can see there are a few updates after version 2.19a...