Installing new video card looks worse on lcd monitor

[Gigabella]

I've been searching, but my knowledge of video cards is minimal and Im having a hard time find an answer. Hope you guys can help

I am not sure of the exact brand or type of video cards they are....but I know they are both nvidia

I have a 64mb currently running in my system, works fine with my viewsonic 510 lcd monitor
I recently bought a 128mb nvidia and popped into the agp slot and it works but.....

no matter what I change the resolution to the itmes either look too big or too small and fuzzy. I can also slight see lines running say from top right to bottom left.

Do you think maybe the monitor cant handle the video card....Im at a loss wether I should go with a new monitor (since I want to upgrade to a widescreen) or maybe buy a new video card.

I may eventually upgrade to Vista from my current XP Pro and that is why I tried to upgrade to the 128mb otherwise Id be fine with the 64mb, because im not a gamer nor do I work with any graphics.........sometimes Ill be addicted to the sims for a few months but thats as far as I go lol

[ktkendall]

Did you install the correct drivers for the new card? In fact it probably wouldn't hurt to be sure and uninstall the old drivers first, then install the new ones.

[Gigabella]

Thanks I'll try that....It looked like the drivers for the new card were installed but then again I dont know how much you can trust windows detect and find new hardware feature.

[ktkendall]

Did you check device manager to see what it is reporting about your new card?

[MoxManiac]

It's a good idea to make sure you download and install the latest drivers from nvidia, regardless. Typically drivers that ship with a video card or already in the windows driver database are quite out of date.

[Gigabella]

Ok so I wound up downloading an older set of drivers and installed them and now it works...although I can see some lines when playing SIMS but nothing really bad

now I have another issue that started a few days after getting this video card to work

now when I boot up my computer....It goes right into bios and wants me to select my cpu speed

I pick my cpu speed and then it proceeds to boot, a little slower then usual I might add

any ideas?