B7 Key fob for B5?

[gmx]

Have a facelift '00 A4 with 3 button remote (5D1 - 433.92mhz carrier frequency I think).
My FOB Part no is 4D0 837 231A

Is it possible to use a B7 key fob for this car? I can't find a specific 433.92mhz, I can see 433mhz. Will it work?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=200346129419&ssPageName=ADME:X:RTQ:GB:1123
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=150347349077&ssPageName=ADME:X:RTQ:GB:1123

 

[gmx]

no one knows?

 

[rasA4]

i doubt if this can be done