Pagerank Checksum Algo For Python Google toolbar 4.0.x

I recently added Windows Vista to my computer.  In doing so, I lost all of the toolbars for Google and Yahoo.  I currently have a Yahoo toolbar, but with minimal non-descript icons; Bookmarks, Settings, Messenger, Mail, MySpace and News.  What I really need is a spell check.  I had this before, and it was instrumental when I was blogging to newspapers (mostly).  No problem with my word processing, as it has a built-in spell and grammar system.  I type very fast and sometimes, there are errors in spelling due to striking the wrong key or double keys at the same time.  I simply want to correct any misspelled words fast and get the messages sent out to the blog sites.  I'm afraid to download, as there are always warnings that the system being downloaded will potentially harm the computer.  Is there an easier, more safer way to add spell check? I live in the Philippines and some of the instructions are in Tagalog...Although I use English 100% of the time.  Thanks. JK