How to increase the preview Texture Resolution on a model?

Hi All,

It's my first time in these forums so be gentle ;P

I am currently trying to ad more detail to a spaceship. It has a quite complex and detailed texture and I would like to use it as a "guide" to creating all the drawn details in 3d. I have Unwrapped the model and it looks well. All I need to do is start to extrude and bool the details. However, the textur (although in med-large resolution) looks VERY blured on the model when viewed in the 4-window layout in 3ds Max and all the details on the ship's body are blured to a point where I cant see them :D How do I increase the "preview" resolution to see it better ?
I would be very gratefull for help!

Thanks!
darek