I wouldn't attemp chips if you're not too techy.
Swap Magic will do just fine!
Buy the version that comes with a special DVD (and the CD is also included, in case you want to play burnt ps1 games) and the little slide
IF you have the fat/old PS2.
If you have the slim, you'll have to get this one right here.
In either case, the installation and use is veeeeery very simple, and won't damage your console at all, so rest assured.
There's one thing you should keep in mind though when burning your games. You can't just burn them on to any DVD, because the quality of the DVD directly affects the speed at which the PS2 can read information. Meaning, if the dvd isn't good quality, you can experience problems that range from longer load times to mid-game lag. Personally, I've found SONYs DVDs to be the best, but they can be a bit on the expensive side (you can save a bit of money by buying towers). Some people also like TDKs but my PS2 can't read those for whattever reason.
Anyways if you want more help feel free to PM me.
ps: I've used Swap Magic for 4+ years and had no problem to date.