[Tinyos-help] A clock problem trouble me for a long time

[roy liu ^-^]

hi,everyone 
     I want to implement a timer fired every 3ms.Someone suggest me to use Timermillic,but it is implemented in the tinyos2.0 and my version is 1.1.15.
    Is it possible for me to achieve my project without updating?
thx a lot 
 				
BestRegards
roy  liu ^-^
2007-01-14