Can you lock textures in memory

Is it possible to lock a texture into texture memory so it can't be removed. I know you can prioritize textures so that high priority textures are less likley to be removed. Is there something that can lock a texture? thanks!

[Nutty]

AFAIK no. I believe this might be remedied one day, as there is allegedly proposals in the pipeline to increase texture management functionality.

Nutty