Please help, I've just started making some extreme use of this control in a current application and have run into a number of problems. If anyone can help I'd really appreciate it.

1) Is there a quick way to color rows beyond just looping through all cells of a row and changing a color? Preferably I'd like to be able to change the color to be painted before I use AddItem and then change the color back afterwards. Is this possible?
2) I'm dealing with adding several hundred rows to a grid, up to a few thousand, are there any techniques for speeding up the display? It seems to be very slow.
3) After entering a large number of rows upwards to a thousand, to loop back through all rows and cells and update individual cells with new values. Upon adding this code I started receiving general application failures upon setting the row values. There's nothing syntatically wrong with the code I'm using, but seems to be more memory related. Has anyone else seen this and is there a work around?