It is low power card, it won't use much more than 8400 SE, so your power supply will surely run it without problems. HD 5670 isn't high performance card, so your computer will not bottleneck it either - Core 2 Duo e7400 could run more powerful cards without bottlenecking.
Just be aware that the Intel DG41RQ has either a PCI-e 1.0 or 1.1 slot.
There has been a few cases where a PCI-e 2.1 card does not work in a PCI-e 1.0 or 1.1 slot. The Radeon HD 5670 you have chosen is likely a PCI-e 2.1 card since the PCI-e 2.0 versions have been sold out everywhere. During the middle of the production cycle of all Radeon HD 5000 series AMD switched from PCI-e 2.0 to the newer PCI-e 2.1 standard. PCI-e 2.0 cards are fully compatible with PCI-e 1.0 and 1.1 slots.
The Radeon HD 7750 is a PCI-e 3.0 card. Technically it should work in a PCI-e 1.0/1.1 slot; like all PCI-e 2.1 cards should. However, most gamers currently have motherboards with PCI-e 2.0 slots... therefore, there has not any reported incidences of a PCI-e 3.0 card working / not working with a PCI-e 1.0/1.1 slot.
I WANT TO INSERT ATI RAEDON HD 5670 1 GB DDR3 WILL IT SUPPOR ON MY CONFIGURATION MY CONFIGURATION IS- 4GD DDR2 WINDOWS -7 ULTIMATE INTEL CORE 2 DUO WITH SYSTEM MODEL DG41RQ E7400 @2.80GHZ AND 320 GB HARD DISK WILL IT SUPPORT PLEASE REPLY