Cant install plugins…

I can’t for the life of me upload the onlywire for wordpress plug in. I have an issue with the write permission or something regarding a setup. How do I set this up. I spent 2 hours last night and its so frustrating… I tried to do it without ftp automatically on the word press site and it didn’t work. Can someone please assist me. I Saw tons of videos and they don’t have the same issues as I do..

Here is what it says:

Unable to create directory /home/r8791/public_html/blog/wp-content/uploads/2010/02. Is its parent directory writable by the server?

Thanks Rick. Send me email at Ricks_emljunk at msn dot com