Assuming you're NOT Mexican, Philippines or India born person with no other 'chargeability', have a look at the F4 and showing Feb 2004 applications being processed. Yes.
http://www.uscis.gov/visabulletininfo
Family-based Immigrant Visas
AND that assumes your sister is NOT JUST LPR/green card holder, but US citizen. In other words, it's 11 years at the moment from petition date for sibling of US citizen and who knows when that'd be accomplished by your sister. So say 2-4 years.
That's roughly 13-15 years FROM NOW you can think of it, without using other visa/legal stay avenue.
Having sibling who is green card holder in US is about as useful as chocolate teapot in short term/near future.
It takes 5-10mins to find relevant info, really.