Sending ACT scores to Colleges from Febuary?

I did not do as well on the SAT as I thought I would. I am planning to take the ACT in February and apply regular to some selective schools (Lehigh,GTech). Could I send my ACT scores to the colleges when I get my results at the end of February? I would apply with low SAT scores, but if I get a good ACt score I could send them in as soon as I get them to increase my chances. I don’t think colleges will look at applications in February?

You need to do some research. The dates are usually available right on the school’s web sites. For instance:

http://admission.gatech.edu/freshman/freshman-deadlines-fees

So no, Feb test info will not be considered. Check all your school web sites.