Are these URLs search engine friendly?

ugly pages generated by CMS

[fom2001uk]

I've just had a look at one of our new sites in development, and I got a bit of a shock when I saw the URLs for the pages. Our CMS is producing URLs like :

oursite.com/indexpage323xy1.aspx?pageid=20
oursite.com/indexpage323xy1.aspx?pageid=25
oursite.com/indexpage323xy1.aspx?pageid=30

oursite.com/indexpage242xy1.aspx?pageid=10
oursite.com/indexpage242xy1.aspx?pageid=25

etc,

These URLs look ugly and that's bad enough, but are they spider friendly? I suspect they are okay, but wanted to confirm this.

[fom2001uk]

and before someone says "if it works for Amazon",

we ain't Amazon ;-)

[growingdigital]

These URL's are fine. It's when you throw in multiple URL variables that the spiders start to choke.

Something like this

http://www.oursite.com/pageone.php?page=1&session=ABCDEFG&user=test

is harder for the spiders to follow because of the possibility of an infinite loop.