there are plenty of pc goldeneye map conversions:
heres a link to a quake 3 conversion of the 'bunker' level:
http://www.planetquake.com/madhouse/007bunker.HTM
even beter there is a entire mod for halflife: heres the info (copied from the info page)
"Description
Goldeneye is a multiplayer partial conversion for Valve Software's Half-Life. The mod features realistic weapons, levels from the N64 game, and character models from the 007 universe. The mod has regular deathmatch, team deathmatch, licensed to kill mode, and an Espionage Gameplay mode.
Features include:
Most weapons from the movie and N64 game.
Very accurate conversions of N64 maps and new original maps, check the screenshots page to see some actual maps.
Of course, new character models, including Bond and more.
New options for deathmatch including an optional radar, instant weapon switch, and more.
Want some other option? E-mail Sean Connery.
Current Maps Completed
Military Archives
The military archives is featured in the movie when 007 and Natalya Simonova have been captured by Soviet forces and are in the process of being interrogated by Defense Minister Mishkin. The archives has an office complex and then a large library. Note: Only the office part is completed so far...
Arkangel Chemical Weapons Facility
Possibly one of the most memorable teasers in the 007 movies takes place at the Arkangel Chemical Weapons Facility. It is 007 and 006's mission to infiltrate the facility undetected and destroy it. This map only has the multiplayer part of the level so far...
Library
This map is also a multiplayer level from the N64 game. And is completed. It consists of the basement level and the stack. You can shoot between the two floors.
Multiplayer Basement
This map is the multiplayer level from the N64 game. And it is completed.
Stack
This map is the multiplayer level from the N64 game. It even comes with respawning breakable glass! It's complete as well.
Temple
This map is set in an ancient temple. It is quite an excellent map for large games.
Egyptian
This is an Egyptian temple level.
Runway
The famous map when bond has to escape to a plane outside the facility. Goldeneye just wouldn't be complete without it.
Cradle
This is the scene of the final showdown between 006 and 007. It is perfectally scaled and makes for some great DM matches.
Bunker
This is the miltary bunker for use in our (ge3) Espionage Gamemode. It is's almost identicle to the N64 version.
Weapons
Please visit our screenshots page to view pictures of the guns listed below.
Slappers
Hunting Knife
P99 Pistol
DD44 Pistol (Colt 45 in real life)
Cougar Magnum
D5K Sub-machinegun (MP5K in real life)
KF7 Sub-machinegun (AK-47 in real life)
ZMG Sub-machinegun (Micro Uzi in real life)
Phantom Sub-machinegun (Spectre in real life)
RC-P90 Sub-Machinegun (P90 in real life)
AR33 Rifle
Sniper Rifle
GoldPP7
SilverPP7
GoldenGun
Proximity Mines
Remote Mines
Timed Mines
Russian Cloaker
Character Models
James Bond ("007" player model)
Trevelyan ("006" player model)
Sean Connery ("connery" player model)
Boris ("boris" player model)
Xenia ("xenia" player model)
Russian Guard ("soldier" player model)
Russian Captain ("ivan" player model)
Helicopter Pilot ("pilot" player model)
Dr. Doak ("cwpscientist" player model)
And more!"