i can not install SQL 2008 español on brand new win 7 64 ,i mac may2011

hello i have a new i mac , just installed parallels7 and windows 7 pro+ office pro
i wanted to install the business contact manager but it doesn't install because during installation it can't perform the sql 2008 express installation, spanish version.

i tried some fixes that comes on microsoft support webpage but nothing,i downloaded the sql 2008 from microsoft and can't install either,

is the SQLEXPR_64_ESN the one i downloaded, when i try to install it shows a message mentioning"Invoke or Begin Invoke can not be called on a control unit until the window handle has been created"that can't perform installation and blabla


does anyone have a solution for this? i am desperate i have spent several days trying to figure out how to solve this and there is little or no information on the web.
thx