Just installed 5.0 onto my computer according to the instructions on the website. No problems there. But I am having a problem listening to audio and searching at the same time. It is very choppy. Then a message appears from my desktop that my virtual memory is low. Is there a remedy?

I have a Dell Celeron 2.53 GHz, 256 MB Ram, Windows XP Home Edition Ver 2002 SP3; Cox DSL cable connection through a Motorola Surfboard Cable Modem SB5101. Virtual memory paging is set to system managed file size 485 MB