The clean hacked wordpress site Codex has an outline of what permissions are okay. Directory and file permissions can be changed either through an FTP client or within the administrative page from the hosting company.
Don't depend on your over at this website Web host - Many men and women rely on their web host to"do all that technical stuff for me", not realizing that sometimes, they don't! Far better to have the responsibility lie rather than out.
Keep control of your online assets - Nothing is worse than having your livelihood in the hands of someone else. Why take chances with something as important as your website?
Make a note of your new password! I you could look here recommend the paid or free version of the secure software *Roboform* to remember your passwords.
Do not use wp_. Web hosting providers are removing that default but if yours doesn't, fix wp_ to anything else but that.