Since beginning my website/blog this summer, I have had a few people ask how I create many of the printable worksheets, emergent readers, etc that I have shared. The majority of these items I create on Microsoft Word with text boxes. After I create these documents, I then save them to a PDF format so they are easier to upload to my blog.
Last winter, January 2008, I presented a workshop with my district on how to create your own resources with technology (primarily Microsoft Word). Here is a copy of the powerpoint presentation: Technology Presentation
Here are some resources on the web to help you with creating your documents:
Microsoft Drawing Tutorial (this PDF discusses many things, such as inserting lines, working with Word Art, etc).
Microsoft Office Training Courses (this is a free resource from Microsoft and features many online classes with a variety of tutorials for various things).
Text Box Tutorial (this PDF discusses the many different ways that you can use text boxes in your documents)
I hope these help!