Windows 7: Wallpaper changer by time

Hi all, Merry christmas

I am after a wallpaper changer that i could use to display different wallpapers during the day, and weekends eg
I have 100+ wallpapers in dog wallpaper
1000+ of my kids in kids wallpaper
90+ of cars in cars wallpaper

but i would like to change my wallpaper at certain times on each of the above, eg
9am- 4pm weekdays kids wallpapers, then 4pm- 8pm dog wallpapers then 8pm - 9am car wallpapers.
has anyone come across a program to do this.

ty for looking

I have not used this one, but found it once upon a time and bookmarked it:

NuonSoft :: Wallpaper Cycler - Product Information

Don't know if it will do all that you want though.

Could could have 3 separate themes. Each one using different wallpapers. And just change the theme at the time you need it to change.

ty for the replies i will look into them

I am interested in this method. Is there a way to do this automatically?

Here's a list of wallpaper changers that you can try:

MSN Wallpaper Manager - MSN Wallpaper Manager from the Windows Live team lets you change your desktop wallpaper at regular interval or based on time (like at lunch, working hours, weekends, etc). MSN Wallpaper Manager automatically downloads wallpaper library in background to provide refreshing wallpapers every day. You can also personalize by adding text, speech bubbles, graphics element 7 foreground images.
Download MSN Wallpaper Manager (link thanks to swarfega!)

Automatic Wallpaper Changer (download: www.awc.smurphy.co.uk) and Any Wallpaper (download: www.anyutils.com/anywall.php) continuously change the desktop picture after a certain amount of time. Look at the page about automatically changing the desktop picture for more information about these tools.

Desktop Wallpaper Changer Gadget - Desktop Wallpaper Gadget Download - Softpedia

John's Background Switcher: My Software « John's Adventures

Except for MSN Wallpaper Manager, none of those programs do what the thread title wants. Thanks for the effort though. =]

MSN Wallpaper Manager has the habit of wanting everything saved on the cloud, so it works if you only have < 10 wallpapers to set into a cycle, but doesn't help when you have any more. It also can't set a certain group of wallpapers to slideshow.

I'm sure this program won't be too hard to code. I just wonder why no one's done it yet.