Welcome to Bleeeping Computer!
Well, first good news: Neither one of these error messages necessarily means you are infected with any malicious software! More info can be found by clicking on the following:
Now, how to deal with the problem. What is happening is that a program (or programs) have been told to start when you boot your computer, and there are some files missing or corrupt that these programs need.
You could uninstall any programs related to these two files and then reinstall them. That might take care of the problem.
Another easy way is to go to:
Start > Run type "msconfig" (without the quotes) and then click on the 'Startup' tab. Here you will find a list of programs that are starting when you boot your computer. Uncheck any that are related to the two missing files and you will no longer see the error messages at bootup.