JERRY VARN,
Can you provide more information. What kind of lamp module? X10 brand or Smarthome brand? Model #?
If you are using a LM465 lamp module; from the off state this module will go to full bright then go to the dim level desired. I have linked a thread that discusses what I think you are looking to do.
Creating a Macro to set a Lamp Module to a specific Brightness (Read 6590 times) (http://www.x10community.com/forums/index.php?topic=7946.msg49129#msg49129)
As for another option; I was using the X10 LM465 lamp module and did not care to program the marco to soft start my light. I just ended up purchasing a Smarthome LampLinc PLC #2000SHL which supports soft start to replace my LM465. Unfortunately Smarthome has discontinued this product. Smarthome is now pushing the INSTEON LampLinc V2 Lamp Dimmer #2456D3. I have not tested this module but after some reading it appears to support the soft start.
I hope this helps. ::) :o ;D
[TTA Edit: Added description to LINK.]