What Laptop Upgrades Can My Uncle Make?

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My uncle has an old Dell Latitude D600 and it's pretty slow. The internet, and videos especially. Videos barely run, and the internet feels like dial up even though its connected through Road Runner high speed LAN internet. Here is some info about the laptop. I need to know what upgrades he can make for the parts showing. DELL LATITUDE D600 1 gb RAM PROCESSOR Intel(R) Pentium(R) M processor 1.60ghz Speed - 591 MHz Model - x86 Family 6 Model 13 Stepping 6 ID - AFE9F9BF000006D6 Genuine Intel Micro Processor MOTHERBOARD AGP PCI IMB USB i2c/SMBus Model - 0G5152 Serial Number - .77HVY51.CN486434AJ7902. Bios Date 6/29/05 MP APIC - Yes System Bios Version - 27d5061d VIDEO MOBILITY RADEON 9000 ATI Technologies Interal DAC 400 mhz Adapter RAM 32mb