Cheers soya. Noticed overdrive was separate but couldn't get on their website this morning so couldn't get it.
Will check the texture max load.
I think I had to patch to the latest version to get OD. You can check which build you have in the "about" section of the rex app and then choose the appropriate patch from the forum before installing OD. Definately worth it. I'm quite enjoying flying the high altitude theme atm with cold front weather. Really pretty. But turbulence theme at night with major storms makes for some very atmospheric stuff in a big jet.
russ0r, the only one I can say is a "must" is the NL2000v4 scenery. It's free so if you have the HDD space and the hardware to get the textures loading fast enough, it's definately a must. It's worth getting REX2.0 as well. Definately cool stuff. After that, get a decent payware plane suited to your style of flying (if you like the complex models, captain sim are a good place to start and are nice on the eyes too).