Selecting Software Update from the Apple menu will automatically provide you with the latest version of Mac OS X available for your system. To move up from one version of Mac OS X to the next (for example from 10.4 to 10.5) you need to purchase a copy of the new version.
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If you already have Internet Explorer installed on your computer, than you have Active X control already installed. If you do not have Internet Explorer installed, then download Internet Explorer from Microsoft's website and install it.
The Internet Explorer software for Mac computers can be easily found as a download on the Internet. This software is available for free, however it should be noted that it is no longer operated by Microsoft.
Not unless you want to use the software. In that case you will need Microsoft Office 2011 for Mac which you will have to purchase. You can also install the free alternative Open Office for Mac.
iChat is provided free with all Mac computers (See links below) and can be installed from the Mac OS X installation discs. It is not legally available from any other source.
Search on the internet for a program called wine hq it runs windows programs on mac and linux
You can install the Mac version of LimeWire on Mac OS X. (See links below)
Yes you can install Sims 3 on a PC or a Mac.
Yes a mac can have a slow internet speed.
Delete temporary internet files by using Disc Cleanup on a Windows PC and by Resetting Safari on a Mac. A great free safe program to clean you PC & Mac is Piriform CCleaner. It will clean out temporary files, history, and registry issues on a Windows PC. The Mac has no registry.
You can download the Zephyr font for free from various font websites such as dafont.com or fontsquirrel.com. Once you have downloaded the font file (.ttf or .otf), you can install it on your Mac by double-clicking the file and clicking "Install Font."
Photoshop is a commercial product and so needs to be purchased. There is no legal way to acquire it for free. There are free alternatives to Photoshop such as Gimp.