First of all how can i tell if my memory is DDR1 or DDR2? Where can i find the details. Secondly im thinking of upgrading my computer to 1GB (a) How much does a 1GB and 2GB memory card cost? (b) How do i install a memory card???? Is there a website where i can learn how to fix in the memory card manually? Thanks and take care hi

Click on the first link below to go to crucial.com. Use the online system scanner to determine what you have and what you can upgrade to. Then use the second link to learn how to install memory. http://www.crucial.com/ http://computermemoryupgrade.mysupe...

Thank you Take care hi

You are welcome.

If your computer came with Vista pre-installed, you almost certainly have DDR2. You can get 2GB (2 x 1GB) DDR2-800 online for about $20 (or less) after rebate. Check Frys.com & Newegg.com...look for deals with free shipping. "If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction

Is your computer a laptop or desktop? They use different memory.

Its a Desktop * Maximum Memory Capacity: 2048MB * Currently Installed Memory: 0MB * Available Memory Slots: 2 * Number of Banks: 2 * Dual Channel Support: Yes * CPU Manufacturer: AuthenticAMD * CPU Family: AMD Sempron(tm) Processor 3500+ Model 15, Stepping 2 * CPU Speed: 2000 MHz * Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules. Q: Will my system recognize the maximum upgrade? A: Possibly How much memory your Windows OS will recognize depends on which version of Windows you are running. 32-bit versions of Windows will see (and utilize) only 3GB or 3.5GB. To utilize more memory, install a 64-bit version of your OS. More information about OS memory maximums can be found at http://www.crucial.com/kb/answer.as... Q: What memory goes into my computer, and can I mix speeds? A: DDR2 memory with support for DDR2 PC2-5300,DDR2 PC2-4200 speeds. Q: How much memory can my computer handle? A: 2048MB. Adding the maximum amount of memory will improve performance and help extend the useful life of your system as you run increasingly demanding software applications in the future. Q: Do I have to install matching pairs? A: No. No, you can install modules one at a time, and you can mix different densities of modules in your computer. But if your computer supports dual-channel memory configurations, you should install in identical pairs (preferably in kits) for optimal performance. Q: Does my computer support dual-channel memory? A: Yes. To benefit from the performance advantages offered by dual-channel systems, you should install memory in identical pairs. Installing a kitted pair is the best way to ensure that your modules are identical, right down to the chip count. Q: Does my computer support ECC memory? A: No. Your system does not support ECC. Because ECC and non-ECC modules should not be mixed within a system, install the same type of modules that are already in your system. hi