From the DeskScapes info page:
â—Ź
Windows XP (32 bit only), Windows Vista
â—Ź
Minimum screen resolution: 1024 width and 768 height
â—Ź
Please read this about video codec requirements
â—Ź
Video Card requirements click here.
â—Ź
Impulse must be installed in order to download and update software.
So it looks like no,but you can uninstall Impulse after downloading and activating DeskScapes.It's not needed to use your software.You just won't be able to get any updates. Impulse only takes up 19.6 Mbs drive space and around 11,000kbs of ram and only runs when you want it to,so really,it's ok to keep it and just launch it ever so often to check for updates. That is entirely up to the user.
Okay, so I have no other choice to install Impulse *uff*
Wich version of Impulse do you recommend? (without installing IE7/IE8!! )
I know by reading the forum that there are two versions of Impulse existing - the full version ans the version from anywhere *confused*
Well Impulse is just the means or the tool to use to digitally download the software or programs you purchase from Stardock. It seems that a lot of people believe it to be a bad or maleware.
Your guestion probably should had been directed to Stardock Support part of the forum. I am not sure that there is a way to download it without Impulse.
I tried to run Deskscapes on an XP Home SP3 system with 2 gb of memory and it didn't work. I only had a P4 chip and a lower end AGP card though. Depending on what you are running you may have better luck.
I think, it doesnt work for you, because you AGP (!) card is a bit TO low end 
(maybe that answer your question why it doesnt work for you)
I have an ATI 4850 Golden sample (512MB) and it works great.
