Just did the whole admissions shebang last year, and from the majority of counselors I've talked to, ACT's and SAT's are becoming lesser determining factors since they really just test how well you take tests. Focus on keeping that gpa up and participation in extra-curriculars, and really nail those essays and interviews (if you have any).
EDIT: In other words, I think you have a good chance- what major you thinking of?
<< Yeah this kind of pisses me off...it was damn hard to get a good GPA in my HS and being a valedictorian actually MEANT something...I keep hearing about all these high schools that allow GPAs up to a 5.0 on a 4.0 scale and with ridiculously easy curriculums and it just seems like your GPA means nothing with crap like this. But a challenging college acts as the great equalizer in the end though and all these kids who had it easy in HS are the ones falling flat on their face. >>
I agree with Mani- I actually had a 5.12 on a 4.0 from AP courses, but it was in no way ridiculously easy. Even so, I was 23rd out of a class of 497. I hate it when people from little schools boast about being valedictorian with a 3.6 and 2 credit hours. I had 34 credit hours coming in and I still barely placed in the top 5% of my class. Sure, its not their fault that they don't have the resources I did to have that many credit hours, but its more the gloating part that pisses me off.
my $0.02