No there is not...
The Task Manager Shell is a mayor part of the OS and you cannot just change it.
The only possible way would be to get Windows 8 (Release preview) and take the files that define the visuals of the OS and modify then in such a way that they work on Windows 7 without loosing the style....
For doing this it is required to have Mayor Skills in programming C++ as well as other programming languages and a good understanding of how a OS works and how the registry works
My Computer
Computer Manufacturer/Model Number
Custom bulit
OS
Windows 7 Ultimate x64 SP1
CPU
Intel Core 2 Duo E7400 @ 2.81 GHz Socket 775 LGA
Motherboard
MSI 7519 P43 Neo
Memory
Kingston (3x2GB) 6GB DDR2 @ 600 MHz
Graphics Card(s)
Nvidia GeFoce 9800 GT (512 MB)
Sound Card
Realtek HD audio
Monitor(s) Displays
Samusng SyncMaster 2043NW
Screen Resolution
1680 x 1050
Hard Drives
3.5'' 320GB ST3320613A SATA II 3.0 Gb/s
PSU
Standard (details N/A)
Case
Vento A8 ASUS chassis
Cooling
Cooler Mater Standard Series Case Fan
Keyboard
Standard PS/2 Keyboard Turbo Spero
Mouse
Logitech Laser RX 1000
Internet Speed
4096 Kb/s
Other Info
High Speed USB 2.0 integrated memory card reader,LG HL-DT-ST DVD-RAM GH22NS30 ATA Drive, TP-LINK TD-8901GB rADSL 2+ router, Sony MegaBass SRS-A37 Stereo Speakers, Realtek PCIe GBE Family Controller.
