Buy an Older Version

• 1). Make sure that your computer is capable of running Excel 2003. The requirements are Windows XP or later, 128 MB of RAM and 400 MB of hard-disk space.
  
  
• 2). Log on to an online software store such as Brothersoft.com, Amazon.com or Excellent-software.net.
  
  
• 3). Type "Excel 2003" in the search bar on the website.
  
  
• 4). Scroll through the results and select the program you wish to purchase.
  
  
• 5). Select the method of payment you wish to use. Most websites accept PayPal or credit card payments. Enter your payment details and then confirm the transaction.
  
  
• 6). Follow the on-screen instructions on how to begin your download.
  
  

Use a Free Trial

• 1). Log on to Brothersoft.com and select the download link.
  
  
• 2). Select the location for the file and then select "OK."
  
  
• 3). The file will download to the location you specified. Open the file by double-clicking it, to run the installation sequence.