there is no help. the vram on your card is not sufficient to draw that far away. either you purchase a card with more vram or you should not cry about missing textures. i am running 5750 1gb and i dont have problems like these. but if i experience something i know thats the limitation of my card.
i d like to apologize about that crying thingie, it was like 5am here and i was kind of edgy ... sry
anyway if it works its ok to play, maybe you should save up and wait a while and then buy new pc. i am saving now myself and waiting for haswell