its possible to 1.0 / 1.2 / and 1.21 at the same time.
your cd key stays same in all 3 versions.
all what you have to do is to copy the game.
i ll tell you now the details, its a little bit tricky, but follow it step by step and u ll understand. =)
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Look where u ve installed ur BFV.
You ll copy the game or 3 times so there ve to be space for it.
ca.(5GB) this should not be a problem =)

You play bfv 1.21, but to play bfv in all 3 versions, you have to deinstall the game for first. after this you need to download the 2 patches. Maybe the 1.21 patch is on ur computer, so u dont need to download..

i searched links for you:

1.2 Patch:
http://www.playunity.de/download/213/

1.21 Patch:
http://www.bf-games.net/download/651/battlefield_vietnam_client_patch_1_21.html
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Deinstall ur Game...
Install it again..
Go to the place where u installed ur bfv.
The file is named "Battlefield Vietnam".
This ll stay so.
Now you copy this file.
Name the "Copy of Battlefield Vietnam" in "Bfv 1.0" .
This ll be later your 1.O version.
Now install the 1.2 Patch.
Just the original file ll be patched.
The copy stays 1.0
After you have patched, copy your original "Battlefield Vietnam" file
again.
Now u got 3 Files.
The original file: "Battlefield vietnam" , the Copy of it, and your "Bfv 1.0"
Name the Copy in: "Bfv 1.2"
Now install the 1.21 Patch.
Again just the original version ll be patched.
After patching, name your "Battlefield Vietnam" in "Bfv1.21"
So its complete. =)
You should delete all Bfv Icons or links on your desktop.
They should doesent run.
You can start Bfv just with your EXE. Files.
Choose one of ur 3 versions, and start the bfv.exe for gaming.

If u need help with Xfire Settings
,for playing Bfv in different versions, write a message.
i will tell u.

i hope this ll help you.
wish you much fun.
Greets / Radicals

is this a no cd key server ? please tell me guys

i want to join this server but i cant i have bfv 1.21 when i tries to cannect it shows disconnect from server what should i need to play ths server

wow, toxic and his little clan hackers wow
damn!
seriously?

Hey dudes, I was banned on Fall of Saigon today... it was lagging seriously ('connection problems detected') for EVERYONE and we were just having banter in the chat... then suddenly I'm banned without warning. Why? unban me please? I didn't do anything wrong!

«[UsM]» is a hacking clan.
("Ethan", "sgt.Gibbs" and "1l111" were DETECTED)
"Dakota" too, he use his cheats often together with "Toxic" on Event Server.
Its makes me sad, much skilled gamers use hacks in the last month..
Dont hack! Get more skill!

Hey hello clan members. You all may know 360 toxic. He's a hacker who got «[UsM]» Cmdr.Coldkiller banned from this server. My friend was there and heard the entire thing. Toxic hacks and was recently banned from the «[XxX]» server because of that. If you'd please take cmdrcoldkiller of the banlist, I'd appreciate that!

np ;)

thanks RADICALS for help me out playing the 3 versions hehehehehe

i play 1.0 , 1.2 and 1,21 at the same time =) hehe =)