thanks for the answer
ok i have too tel more:) i am a architecture student ... and stay 1 semester in China ... with 4 other frends.the studio works only with sketchup...my frends have all old laptops than 3 years and mutch older(duelcore 2mb Ram ...)the studio give us a model over 120 mb +- a whole city:D all the other laptops can open the file after 30 -40 sek. ... if i open it that need 4 -5 min. ... and its not so fluent ... that the reason why it cant be the model?or? it must somthing als?

Hi,
after 3-5 mb it is so slow that i cant put the shadow on ... and i don´t know why ... i have a notebook with a i7 processor 8GB ram and the Radeon HD 6370M 1GB graphics Card(asus x52j) win7 64 bit... is the graphic card too bad? a friend has a 5 year old laptop and it works over 100 mb ... i reinstalled the graphics Card and made a update ... but it is just the same ... i reinstalled sketchup too and it is the same ... ??? i hope you guys have an answer:)

thanks mullan