I am extreemly new at this, but my tutors couldnt help either

I am using VB6

I am using a for-next and want to pause inbetween each go but cant work out how

code Code:
  1. for a=10 to 300 step 10
  2. line(a,100)-(a-400)
  3. next a

I want a pause inbetween drawing each line
I have tried sleep or putting a for-next loop to slow it down but I cant get it to work properly

Any help would be nice

Thanks

Ady