Upgrade XPS M1710

Sorry about the rant but I have to get this off my chest. Thanks for any help pertaining to any question in this post.

I have been having issues with my 1710 since day 1 and now I am just fedup with it. Yes I have gone through the technical support with my problems but spending 5hrs on a phone and not solving the problem is not acceptable. So I was hoping if I can just upgrade my 1710 to a 1730 and get all my problems solved(since the 1710 is discontinued). If I must pay for a difference then I am willing. I use xp not vista so that is not the problem in any case.

If you want details as to what problems I get then the most common issue I get is a memory issue saying memory could not be written/read (one of the two) I have had my RAM replaced but that didn't really fix the problem. It did fix the memory could not be written issues but I still get read errors and at random times. The error jumps around from each app, DivX, World of Warcraft, PowerCinema. I flash the HDD at least every 3 months and install all the latest drivers from dell (and yes I do install them in the proper order, got it from a dell Tech support guy when the Windows Disc they gave me was corrupt and had to get it replaced). Except the Nvidia driver since the one from Nvidia is more current then Dell's. I play a lot of games and they all look perfect at the highest settings running at 60fps(since that is the frequency of the monitor) Don't know if I am having memory issues with the Graphics card or not but Dell says this issue I get is related to my RAM. Also I have been getting a wierd error message sometimes when I turnoff the notebook, it says "DLL failed to initialize" kinda wierd since I am turning off the pc.

My system hard ware are as follows

(no I do not overclock since that can lead to void warranties and a broken lappy.....Also I don't have the time)

Intel Centrino Duo 2.0Ghz T2500

100GB HD

2GB RAM (667Mhz I believe) 

Nvidia 7900 GTX GO 512MB

Windows XP Pro sp2