How can i find my sister cassidy amber clark?

wen she was about 3 years old she got adopted. her and i have the same dad but different moms . u knw at first i could have cared less that i never did get to meet her or anythin. but then when i got older . i started thinkin, i only get to live one time. i only get to see this world for so long. and everynite i think bout how there is a 20 year old girl thats my sister and i want to meet her so bad. i just want to tell her how i feel. oh and she has no idea she has another sister. in fact she has two sisters tht she ha no idea about. my little sister she is only ten. im teen. i dnt care if amber dnt want anytihng to do wit us wen we meet her. i jus wish there was sum policeman,dectitive tht could possibly give me a number, address. pleae dont tell me to search on the internet or myspace facebook xanga or anything like tht becuz i have tried many times!! jus think bout it. what if u wanted to find ur sister. what if u and ur sister cry everynite becuz u want to meet ur long lost sister

How can i find my sister cassidy amber clark?
people finder and maybe myspace if they have one.

gumps