The IRS's own site has all the forms you need: http://www.irs.gov/formspubs/index.html . These are platform independent PDFs.
IRS has all the forms. This one is at www.irs.gov/pub/irs-pdf/f1099msc.pdf
Assuming you mean California tax for 100, you can download that here: http://www.ftb.ca.gov/forms/2008/08_100.pdf . it's a PDF, so both Macs and PCs can read it.
No - it's the same price for Macs as well as PC's. However, the free trial download of Photoshop direct from Adobe is no cost for either (see related links below)
Macs come with iMovie video editing software.
One way you can get free wallpapers on Macs is by downloading an app called Free Wallpapers Lite and downloading some off of there. You could also try to find another app offering free wallpapers as well.
All macs come new with iTunes and if set properly can be set to download all of the frequent free software updates to the software that apple makes available.
It IS out for macs. Go to the download page, and look under Macs
You can't. iMovie is for Macs only. For Windows you have to use Windows Movie Maker.
Macs come standard with iTunes. For Windows computers, iTunes can be downloaded for free at http://www.apple.com/itunes/download
There is a second download underneath the pc download for macs. macs lag less, run faster and glitch slightly more but make it near impossible to download mods and texture pack
i would say that your best bet would be to play runescape its free you dont download it and if you want to you can pay and get a lot more things to get and do. check it out!!
Adobe's Photoshop for Macs is available from any software retailer. You can download a trial version directly from Adobe. (See links below)