2 XP SP 3 versions?

2 XP SP 3 versions?

I downloaded the .ISO file as well as the .EXE file.
The iso file is more then 500MB and the EXE file is more then 300 MB.

Q: Why is one bigger then the other?
Q: do I use the ISO or the EXE file to slipstream?

I have XP Home with slipstream SP2 and I have the original XP, I don’t know if it has SP1 or not.
How can I find out?
Does it matter?
Can I use either to slipstream SP3 or do I need to use the original?

Thanks
Sven

 

First, see Arie's post regarding slipsteaming.

As for the difference in the downloads, click here.

 

Thanks,
that is what I was Looking for

Sven