I have killed woman in black and found my way back to the time line thingy but cant activate
1 of the blocks on the wall to get the lava flowing, it does tell me i've missed something but I can't find what it is...PLEASE HELP....

Are you playing Warrior Within or Revelations on the PSP?
I do not remember "lava" in Warrior Within.

Please display your in-game map.
The words in the lower left-hand corner of the map describe your current location.
The words at the top of the map describe your current objective.

I'm playing warrior within on PS2, I figured
the "lava" must be blood as I'm at the Sacrificial altar(past)

I've also gone back to kill the lady in black again to see if I have missed anything, when I first walk into the sacrificial altar the "crow man" is standing on a moving plattform that goes into the wall above me, is there anything I have to do with that???

I figured out what you are describing about "lava".

Game: Warrior Within
Location: A Time Warp Portal room

There are many time warp portal rooms in the game.
There are buttons on four wall pillars.
Each time warp portal room appears to have a random sequence in which you need to activate the time warp portal.

One time you might need to wall run onto the following in this order:
- front left switch
- front right switch
- back left switch
- back right switch

After wall running and activating a wall switch, stop and notice whether or not any "liquid sand" is flowing near that switch. If not, then go to another switch.

Once you have one working, remember that is the first in your sequence.
Wall run over another switch. If it activates more liquid sand, then that is your second switch in your sequence; else it deactivates the first switch's liquid sand and you must start your sequence over again.

Get used to doing this. There are many such portals in the game.

IMPORTANT! When in a time warp portal room, do not save your game if the portal is not yet active. Save the game after activating the time warp portal. If you saved your game before activating the portal, go through the activated portal and then save the game over the previous one.
There is a disastrous logic bug if you restore a saved game from an inactive time warp portal.

Enjoy!

Thanks kakalukiaJay,it turns out I missed a room where you gain power, got threw to next stage

In the future, please post your questions about legacy POP games in the forum Prince of Persia Legacy