All else being equal, there are really only two main things you can do to improve export times. One is to get a faster CPU. The second, and this only applies under certain conditions, is to get a better graphics card.
They should be done in that order.
Some lesser but sometimes still helpful things you can do are adding more memory and more/faster hard drives.
With this MBP there is not much you can do. Only option is to get a PC.
The MBP is underpowered for the material you use and does not meet minimum requirements.
Before I purchase CS5 it said that my CPU meet minimum requirements, I guess this not the case...
- Multicore Intel processor with 64-bit support
- Mac OS X v10.5.8 or v10.6.3; Mac OS X v10.6.3 required for GPU-accelerated performance
- 2GB of RAM (4GB or more recommended)
- 10GB of available hard-disk space for installation; additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on removable flash storage devices)
- 7200 RPM hard drive for editing compressed video formats; RAID 0 for uncompressed
- 1280x900 display with OpenGL 2.0–compatible graphics card
- Adobe-certified GPU card for GPU–accelerated performance; visit www.adobe.com/go/premiere_systemreqs for the latest list of supported cards
- Core Audio–compatible sound card
- DVD-ROM drive compatible with dual-layer DVDs (SuperDrive for burning DVDs; external Blu-ray burner for creating Blu-ray Disc media)
- QuickTime 7.6.2 software required for QuickTime features
- Adobe Flash Player 10 software required to play back DVD projects exported as SWF files
- Broadband Internet connection required for online services and to validate Subscription Edition (if applicable) on an ongoing basis*
I guess this not the case...
For your media, not really.