You've got much deeper issues than just PageRank (which is merely an indicator whose importance has been blown WAY out of proportion.)
I know you didn't ask for a review, but in this case, the things I'm suggesting will help you attain some of your SEO goals since they will enhance the user experience. It's also a lot easier to get people to link to you organically when you actually give them a reason to.
For example, on the left side of your home page, you have a link for Scosche accessories (which I'm assuming is the car kits, etc...did sell car audio back in the late 90s.)
Click the link. You see what happens? Nothing. No Scosche accessory dealers of any kind. And the form itself doesn't indicate that you're searching for Scosche accessory dealers. If you're going to have a link like that, have some of the featured dealer links right there on what should be the Scosche page so that people can actually see that you have stuff.
The same thing goes for your other major categories and "brand names" (although I don't think too many people would recognize Scosche.
) Give people at least SOME links on those pages with links to more stuff. You'll make life easier for them AND for search engines alike to crawl your site.
Next up: site map. If you're going to cover that many links, you oughta have a site map, if for no other reason than to make SE spiders' lives easier. You give them a means to navigate your site quickly and easily, they'll show you a little love in return.
Next: your cart. I noticed you're selling T-shirts using what appears to that Zen shopping cart or whatever it's called. I know Zen's in the name somewhere because you've got the zenid= querystring kicking around in those URLs. Session hashes in querystrings are baaaaaaaad. Shouldn't do it. Wouldn't be prudent. SEs don't like 'em much and perhaps more importantly than that, they look ugly as sin in the address bar. Who wants to see zenid=2a7023b0f03be844b130a93262d59b91 up there anyway?
Next up: your title tags. These should describe the pages of your site. People already know they're on autoshoplinks.com...assuming they can read your banner.
Whiiiiiich brings me to the next issue. alt attributes on images...gotta have 'em, my friend. You never know who's looking at your site (or more importantly, who's visiting without actually being ABLE to look.) If you're going to use images, describe them with the alt attribute for the benefit of those without eyes (including your friends the search engine spiders...think Image Search.)
There are other issues, I'm sure. But I don't want to come down all hard on you myself, and in the interest of group participation (letting others have a turn and all that), I'm going to stop there.
The long and the short of your issue is that your user issues should be your primary focus at this point, not promoting it. Even if you do manage to gain any kind of ranking and traffic under certain keywords and phrases, your site does nothing to keep users there once they find your site.
Side note: for those wondering who Scosche is, they're an aftermarket radio car kit manufacturer (possibly among other things, but the store I worked in only carried the kits, and I stopped working there in '99 so my knowledge is rusty at best). If you buy an aftermarket deck (e.g. a Pioneer deck) and you have a car with the large factory deck (e.g. about 98% of GM cars), you'll need the car kit to fill in the excess space and keep your new deck from bouncing around in the big open hole.
